Horiba Pocket Testers – Compact Measurement Solutions for Precise Water Analysis On-Site or in the Laboratory

Mobile Analysis Laboratory for Ion Measurements – Versatile Use Compact kit for simultaneous determination of multiple water and environmental parameters The Horiba 4M LAQUAtwin Kit is a mobile laboratory that allows you to determine important ion parameters directly on-site. The case contains pocket testers for measuring sodium, potassium, nitrate, and calcium, as well as for temperature measurement. Each device uses ion-selective electrodes for targeted analysis of small samples and provides fast, reliable results. In addition to the four measurement devices, the kit includes calibration solutions and a wash/spray bottle for sensor cleaning. The sensors can be stored dry without special storage solutions. Compact Multi-Parameter Kit for Flexible On-Site Analyses The set is designed for measurement tasks where multiple ions need to be detected simultaneously, for example when monitoring drinking and process water, performing environmental checks of water bodies, conducting aquaculture analyses, or agricultural research. Thanks to the case, all essential testers including accessories are always on hand and ready for immediate use. The measurement results are available in a short time and are reliable and reproducible – ideal for routine and control measurements in the field. All components are neatly arranged in the case and ready for use at any time. An additional advantage is that the sensors can be stored dry without special storage solutions. Due to its compact design, the kit is particularly suitable for mobile applications where multiple ion parameters need to be determined quickly one after the other or in parallel. Why Multi-Parameter Ion Measurements Are Useful – and a Mobile Kit Is Ideal In many applications, not just a single measurement is important, but the interaction of multiple ion parameters. Sodium, potassium, nitrate, and calcium together influence water quality, biological processes, plant growth, and technical operations. Single measurements in a laboratory are often time-consuming and inflexible. A mobile analysis kit allows simultaneous detection of multiple parameters directly on-site. This allows relationships to be recognized more quickly, decisions to be made more reliably, and measurement campaigns to be carried out more efficiently. The Horiba 4M LAQUAtwin Kit combines these advantages in a compact, user-friendly system. Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as the instruction manual. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. DO220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery DO210 or DO220 handheld meter 9552-20D galvanic oxygen sensor with 2-metre cable Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers DO210-K: 3200779530 DO220-K: 3200779531 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as the instruction manual. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. DO220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery DO210 or DO220 handheld meter 9552-20D galvanic oxygen sensor with 2-metre cable Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers DO210-K: 3200779530 DO220-K: 3200779531 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. EC220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery EC210 or EC220 handheld meter 9383-10D Ti/Pt conductivity electrode (k = 1.0), immersible probe One calibration solution each with 84 µS/cm, 1413 µS/cm, 12.88 mS/cm and 111.8 mS/cm (60 ml each) Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers EC210-K: 3200779528 EC220-K: 3200779529 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. EC220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery EC210 or EC220 handheld meter 9383-10D Ti/Pt conductivity electrode (k = 1.0), immersible probe One calibration solution each with 84 µS/cm, 1413 µS/cm, 12.88 mS/cm and 111.8 mS/cm (60 ml each) Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers EC210-K: 3200779528 EC220-K: 3200779529 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrodes, the corresponding cables for connecting the electrodes to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. PC220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery PC210 or PC220 handheld meter 9652-10D gel pH electrode 9383-10D Ti/Pt conductivity electrode (k = 1.0) One pH buffer solution each with pH 4.01 and 7.00 (60 ml each) One calibration solution each with 1413 µS/cm and 12.88 mS/cm (60 ml each) Electrode holder / adapter Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers PC210-K: 3200779532 PC220-K: 3200779533 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrodes, the corresponding cables for connecting the electrodes to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. PC220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery PC210 or PC220 handheld meter 9652-10D gel pH electrode 9383-10D Ti/Pt conductivity electrode (k = 1.0) One pH buffer solution each with pH 4.01 and 7.00 (60 ml each) One calibration solution each with 1413 µS/cm and 12.88 mS/cm (60 ml each) Electrode holder / adapter Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers PC210-K: 3200779532 PC220-K: 3200779533 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrodes, the corresponding cables for connecting the electrodes to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. PD220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery PD210 or PD220 handheld meter 9652-20D gel pH electrode with 2-metre cable 9552-20D galvanic oxygen sensor with 2-metre cable One pH buffer solution each with pH 4.01, 7.00 and 10.01 (60 ml each) Electrode holder / adapter Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers PD210-K: 3200779534 PD220-K: 3200779535 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrodes, the corresponding cables for connecting the electrodes to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. PD220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery PD210 or PD220 handheld meter 9652-20D gel pH electrode with 2-metre cable 9552-20D galvanic oxygen sensor with 2-metre cable One pH buffer solution each with pH 4.01, 7.00 and 10.01 (60 ml each) Electrode holder / adapter Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers PD210-K: 3200779534 PD220-K: 3200779535 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. PH220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery PH210 or PH220 handheld meter 9652-10D gel pH electrode One pH buffer solution each with pH 4.01, 7.00 and 10.01 (60 ml each) Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers PH210-K: 3200779526 PH220-K: 3200779527 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. PH220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery PH210 or PH220 handheld meter 9652-10D gel pH electrode One pH buffer solution each with pH 4.01, 7.00 and 10.01 (60 ml each) Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers PH210-K: 3200779526 PH220-K: 3200779527 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Thank you for your interest in our smart and individually configurable measuring instruments of the HORIBA LAQUA WQ-300 series. The high-quality digital multi-parameter handheld meters feature a large colour LCD display with LED backlight (7 cm x 5.2 cm), making them ideally suited for field use under a wide range of conditions and in direct daylight. Use our configurator to select the appropriate measuring instrument from the HORIBA WQ-300 series with 1 to 3 measuring channels, the desired measuring parameters (sensor cartridges) and the required cable length according to your individual needs. The sensor cables feature an integrated sensor receptacle and digital module. Additional measuring parameters can also be connected at a later stage using the corresponding sensor cable or carried in the measuring case as supplementary equipment. As with other HORIBA handheld meters, the devices are particularly resistant to shocks, slipping and scratches thanks to their special rubber coating. Operation requires four standard AA batteries with 2500 mAh. For greater flexibility during mobile use, the WQ-300 series can alternatively be powered by a power bank or battery pack via the integrated USB interface. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. HORIBA offers a three-year warranty on the handheld measuring instruments of the LAQUA WQ-300 series. Functions and Features During measurements, users are supported by operating instructions displayed in the form of smiley symbols. These are complemented by an LED status indicator on the sensor to help prevent operating errors and implausible measurement results. The small number of control buttons and the absence of complex, nested menus ensure that the instruments remain easy and safe to operate, even when used intermittently or by different users. Additional Functions Electrode wear indicator Measurement stability indicator on the instrument and sensor Hold function to "save" the current measured value on the display Individual measuring point identification with up to 8 characters Automatic calibration functions Integrated sensor holders Self-diagnostic function GLP functions Fold-out stand for convenient hands-free measurements Transfer of measurement data to a computer or smartphone via USB or WiFi Measuring Case for Mobile Use All handheld meters of the WQ-300 series are supplied in a reinforced measuring case for mobile outdoor use. The case provides space for the measuring instrument, electrodes and cables, as well as up to eight 60 ml bottles of buffer solutions. An integrated holder for buffer solution bottles facilitates calibration. Automatic Sensor Recognition A particular advantage of the WQ-300 series is automatic sensor recognition through sensor cables with integrated digital sensor receptacles. Information about the sensor, calibration data and measurement settings is stored in the digital sensor module and transmitted to the measuring instrument. In addition, all connected sensors can be calibrated simultaneously, as each sensor module independently stores measurement and calibration data and transmits them to the WQ-300 series measuring instrument. Analogue sensors can optionally be connected using the HORIBA BNC sensor adapter. Please contact us for further information. Available Languages German English French Spanish Portuguese Chinese Scope of Delivery WQ-300 series handheld meter in a carrying case Selected digital electrode, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptacle Instruction manual Manufacturer Article Number WQ-310-K (1 channel): 3200832605 Calibrating the Instrument pH Measurement To obtain accurate results, a two-point calibration must be carried out. The following buffer solutions are recommended: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples If the expected pH value of the sample is unknown, a three-point calibration using pH 7.00, 4.01 and 10.01 is recommended. It is recommended to begin calibration with pH 7.00. Conductivity Measurement For conductivity measurements, a single-point calibration is sufficient, for example at 1413 µS/cm. For greater accuracy, a multi-point calibration can also be performed. Important Note on the Chloride Sensor Note: If a chloride sensor is selected, it is supplied without chloride ionic strength adjuster and chloride electrode filling solution. These solutions must be purchased separately by the customer. The chloride sensor cannot be used without the required filling solution. Why We Use These Measuring Devices in Water Treatment Precise calcium control is an important element of efficient water treatment, from drinking water purification and process water management to environmental analysis. Elevated calcium concentrations can contribute to scale formation, pipe damage, increased energy consumption and disruptions in chemical processes. For these applications, we offer configurable solutions from the HORIBA LAQUA WQ series in our online shop. Available Measuring Instruments WQ310-K: Single-channel solution for targeted measurements. WQ320-K: Simultaneous measurement of two parameters, such as calcium and conductivity. WQ330-K: Three-channel measurement for complex multi-parameter analyses. Benefits for Water Treatment Reliable measurement data for monitoring and optimising water treatment systems. Digital evaluation, documented measurement results and interfaces for data transfer. Robust design and practical measuring case for mobile on-site use. Flexible combination of calcium measurements with other parameters such as pH, conductivity or redox potential. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Thank you for your interest in our smart and individually configurable measuring instruments of the HORIBA LAQUA WQ-300 series. The high-quality digital multi-parameter handheld meters feature a large colour LCD display with LED backlight (7 cm x 5.2 cm), making them ideally suited for field use under a wide range of conditions and in direct daylight. Use our configurator to select the appropriate measuring instrument from the HORIBA WQ-300 series with 1 to 3 measuring channels, the desired measuring parameters (sensor cartridges) and the required cable length according to your individual needs. The sensor cables feature an integrated sensor receptacle and digital module. Additional measuring parameters can also be connected at a later stage using the corresponding sensor cable or carried in the measuring case as supplementary equipment. As with other HORIBA handheld meters, the devices are particularly resistant to shocks, slipping and scratches thanks to their special rubber coating. Operation requires four standard AA batteries with 2500 mAh. For greater flexibility during mobile use, the WQ-300 series can alternatively be powered by a power bank or battery pack via the integrated USB interface. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. HORIBA offers a three-year warranty on the handheld measuring instruments of the LAQUA WQ-300 series. Functions and Features During measurements, users are supported by operating instructions displayed in the form of smiley symbols. These are complemented by an LED status indicator on the sensor to help prevent operating errors and implausible measurement results. The small number of control buttons and the absence of complex, nested menus ensure that the instruments remain easy and safe to operate, even when used intermittently or by different users. Additional Functions Electrode wear indicator Measurement stability indicator on the instrument and sensor Hold function to "save" the current measured value on the display Individual measuring point identification with up to 8 characters Automatic calibration functions Integrated sensor holders Self-diagnostic function GLP functions Fold-out stand for convenient hands-free measurements Transfer of measurement data to a computer or smartphone via USB or WiFi Measuring Case for Mobile Use All handheld meters of the WQ-300 series are supplied in a reinforced measuring case for mobile outdoor use. The case provides space for the measuring instrument, electrodes and cables, as well as up to eight 60 ml bottles of buffer solutions. An integrated holder for buffer solution bottles facilitates calibration. Automatic Sensor Recognition A particular advantage of the WQ-300 series is automatic sensor recognition through sensor cables with integrated digital sensor receptacles. Information about the sensor, calibration data and measurement settings is stored in the digital sensor module and transmitted to the measuring instrument. In addition, all connected sensors can be calibrated simultaneously, as each sensor module independently stores measurement and calibration data and transmits them to the WQ-300 series measuring instrument. Analogue sensors can optionally be connected using the HORIBA BNC sensor adapter. Please contact us for further information. Available Languages German English French Spanish Portuguese Chinese Scope of Delivery WQ-300 series handheld meter in a carrying case Selected digital electrode, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptacle Instruction manual Manufacturer Article Number WQ-320-K (2 channels): 3200832606 Calibrating the Instrument pH Measurement To obtain accurate results, a two-point calibration must be carried out. The following buffer solutions are recommended: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples If the expected pH value of the sample is unknown, a three-point calibration using pH 7.00, 4.01 and 10.01 is recommended. It is recommended to begin calibration with pH 7.00. Conductivity Measurement For conductivity measurements, a single-point calibration is sufficient, for example at 1413 µS/cm. For greater accuracy, a multi-point calibration can also be performed. Important Note on the Chloride Sensor Note: If a chloride sensor is selected, it is supplied without chloride ionic strength adjuster and chloride electrode filling solution. These solutions must be purchased separately by the customer. The chloride sensor cannot be used without the required filling solution. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Horiba WQ330-K – Your Professional 3-Channel Water Quality Meter Expandable multi-parameter system for simultaneous measurement of pH, conductivity, redox, and other water parameters The Horiba LAQUA WQ330-K is a powerful multi-channel device for advanced water analysis, both on-site and in the laboratory. With three freely configurable measurement channels, it can simultaneously record parameters such as pH, conductivity, redox potential, TDS, temperature, oxygen, ammonia, calcium, chloride, nitrate, fluoride, and potassium. Intuitive operation, automatic sensor recognition, and digital calibration ensure accurate, fast, and reproducible measurements. Flexible Multi-Parameter System for Field and Laboratory Applications The analysis kit with the Horiba WQ330-K is ideal for environmental and water body monitoring, research and teaching, as well as drinking and process water control. The large LCD display with LED backlight ensures excellent readability even in direct sunlight. Measurement data can be exported and documented via USB or wirelessly, greatly simplifying traceability and analysis. The modular system allows the device to be quickly and precisely adapted to any measurement task. It is ideal for users who need to efficiently and reliably monitor multiple water parameters. Technical Features and Key Advantages of the WQ330-K The three measurement channels of the Horiba WQ330-K enable simultaneous recording of different water parameters, reducing measurement time and allowing better evaluation of relationships between parameters. The modular sensor concept allows flexible use of digital sensors, which are automatically recognized and store their calibration history. Notably, the combination of high measurement precision, user-friendliness, and mobility makes this device stand out. Quick deployment without complicated setup, along with easy data transfer for documentation and analysis, makes the Horiba LAQUA WQ330-K an ideal solution for professional water analytics. Calibrating the instrument: pH measurement To obtain accurate results, a two-point calibration must be carried out. It is recommended that the following solutions be used: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples Carry out a three-point calibration using pH 7.00, 4.01 and 10.01 if you do not know the expected pH value of the sample. It is recommended that you calibrate using pH 7.00 first. Conductivity measurement For a conductivity measurement, a single-point calibration is sufficient, for example at 1413 μS/cm. For greater accuracy, a multi-point calibration can also be carried out. Note: During the promotional period, the discount on accessories will be automatically deducted at the shop’s checkout when purchased together with the HORIBA WQ330 device. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. Frequently asked questions How long is the warranty period for HORIBA analysers? The warranty period is 2 years for the 300 (WQ) series and 1 year for the F series after delivery. Where can I find suitable replacement electrodes or buffer solutions? You can find the appropriate replacement electrodes and buffer solutions in the shop under the main item at the bottom of the cross-selling section. How do I clean the probe before calibration? The sensors should be cleaned with DI water (deionised). After cleaning, wipe them with tissue paper if possible. Frequently asked questions about the promotion How long does the promotion run for? The promotion runs from 1 September 2026 to 31 December 2026. How do I get the discount on the accessories? The discount will be automatically deducted at the shop’s checkout when you purchase the HORIBA WQ330 unit at the same time.

Horiba LAQUAtwin 4EC-11 Conductivity Tester – Successor model to the EC-11 Horiba LAQUAtwin Conductivity Tester with 3 calibration points (4EC-11) Find out more about the accuracy of the new successor models to the HORIBA pocket conductivity testers: Your ideal choice for precise conductivity measurements. Manufactured in Japan, the 4EC-11, 4EC-22 and 4EC-33 models represent the highest quality among pocket testers. They offer numerous benefits for users in laboratories, industry, aquaculture, water treatment, schools and universities, as well as for amateur gardeners. An overview of the new HORIBA Pocket Conductivity Tester series: Model 4EC-11: Water resistance, the ability to analyse very small samples from 0.12 ml, 3 calibration points and a conductivity measurement range of up to 19.9 mS/cm are the key features of these instruments. They are easy to operate and maintain, ensuring long-term reliability. Model 4EC-22: In addition to the features of the Model 4EC-11, this model offers a temperature display, four calibration points and an extended conductivity measurement range of up to 199.9 mS/cm. This instrument is ideal for demanding applications where the medium temperature must be recorded for detailed analysis. Model 4EC-33: With the widest measurement range, the ability to measure TDS and additional functions, this model sets new standards. It is designed for professionals who need to carry out highly precise measurements under varying conditions. Applications and benefits for the user: ‘Immersion’: Direct measurement is possible in solutions. For example, you can immerse the tester in a beaker and determine the value. ‘Scoop’: The hinged lid, which acts as a scoop here, allows you to easily take a sample from a hard-to-reach area. ‘Drops’: Efficient analysis of the smallest volumes. Thanks to their user-friendliness, durability and ‘Made in Japan’ quality, HORIBA pocket conductivity testers are a reliable solution for a wide range of measurement applications. LAQUAtwin 4EC-11: The pocket-sized conductivity meter This is the only pocket-sized meter that measures conductivity directly in a 0.12 ml sample. You do not need a beaker to calibrate the meter or measure a sample. Simply place a few drops of the standard solution or sample directly onto the sensor. This method saves time and prevents the wastage of your valuable sample. Your mobile laboratory – for on-site use: Ideal for water quality testing in aquariums, food, beekeeping (honey) and many other applications HORIBAs unique compact meter integrates the electrode, display and sample vessel to enable simple, effective on-site testing through direct measurement with a single drop. Product features: Minimum sample volume: 0.12 ml Up to 3 calibration points Automatic range selection Automatic calibration Automatic standard recognition: 84 μS/cm, 1413 μS/cm and 12.88 mS/cm Automatic temperature compensation: 2 %/°C fixed Automatic stability/hold function Automatic switch-off (30 minutes) Low battery indicator Waterproof and dustproof to IP67 Replaceable sensor 400-hour battery life: continuous operation without backlight Materials: ABS epoxy housing and titanium-coated carbon sensor Display: custom (monochrome) LCD with backlight Operating conditions: 5 to 40 °C, 85% or less relative humidity Warranty: 2 years – meter, 6 months – sensor Packaged in a handy box Supplied with 1413 µS/cm and 12.88 mS/cm conductivity standards (14 ml each), conditioning solution (4 ml), dropper, manual and quick start guides. Manufacturer's item number: 3201077522 Note: How can I tell if I have an old or new device? If your Pocket Tester is marked ‘4-cell’, you have the latest version of this device. In this case, you will need the replacement sensors listed in the cross-selling section, as well as the standard and conditioning solutions. These have been specially optimised for the new Pocket Testers and are not suitable for older models. Please note: The battery is not included.

Horiba LAQUAtwin 4EC-22 Conductivity Tester – Successor model to the EC-22 Horiba LAQUAtwin Conductivity Tester with 4 calibration points (4EC-22) Find out more about the accuracy of the new successor models to the HORIBA pocket conductivity testers: Your ideal choice for precise conductivity measurements. Manufactured in Japan, the 4EC-11, 4EC-22 and 4EC-33 models represent the highest quality among pocket testers. They offer numerous benefits for users in laboratories, industry, aquaculture, water treatment, schools and universities, as well as for amateur gardeners. An overview of the new HORIBA Pocket Conductivity Tester series: Model 4EC-11: Water resistance, the ability to analyse very small samples from 0.12 ml, 3 calibration points and a conductivity measurement range of up to 19.9 mS/cm are the key features of these instruments. They are easy to operate and maintain, ensuring long-term reliability. Model 4EC-22: In addition to the features of the Model 4EC-11, this model offers a temperature display, four calibration points and an extended conductivity measurement range of up to 199.9 mS/cm. This instrument is ideal for demanding applications where the medium temperature must be recorded for detailed analysis. Model 4EC-33: With the widest measurement range, the ability to measure TDS and additional functions, this model sets new standards. It is designed for professionals who need to carry out highly precise measurements under varying conditions. Applications and benefits for the user: ‘Immersion’: Direct measurement is possible in solutions. For example, you can immerse the tester in a beaker and determine the value. ‘Scoop’: The hinged lid, which acts as a scoop here, allows you to easily take a sample from a hard-to-reach area. ‘Drops’: Efficient analysis of the smallest volumes. Thanks to their user-friendliness, durability and ‘Made in Japan’ quality, HORIBA pocket conductivity testers are a reliable solution for a wide range of measurement applications. LAQUAtwin 4EC-22: The pocket-sized conductivity meter This is the only pocket-sized meter that measures conductivity directly in a 0.12 ml sample. You do not need a beaker to calibrate the meter or measure a sample. Simply place a few drops of the standard solution or sample directly onto the sensor. This method saves time and prevents the wastage of your valuable sample. Your pocket-sized laboratory – practical for on-site use: Ideal for water quality testing in aquariums, food, beekeeping (honey) and many other applications HORIBA’s unique and compact meter combines an electrode, display and sample vessel. This enables simple and effective measurements to be taken directly on site, as the measurement is performed using just a single drop. Product features: Minimum sample volume: 0.12 ml Up to 4 calibration points Display of conductivity and temperature (0 °C to 50.0 °C) Automatic range selection Automatic calibration Automatic standard recognition: 84 μS/cm, 1413 μS/cm, 12.88 mS/cm & 111.8 mS/cm Automatic temperature compensation: 2 %/°C fixed setting Temperature range: 5 to 40.0 °C Automatic stabilisation / automatic data storage Automatic switch-off (30 mins) Low battery indicator Protection class IP67, waterproof and dustproof Replaceable sensor 400 hours battery life: continuous operation without backlight Material: ABS-epoxy resin housing & carbon sensor Display: special (monochrome) LCD with backlight Operating conditions: 5 to 40 °C, 85% relative humidity or less Warranty: 2 years – meter, 6 months – sensor Packaged in a practical plastic box Contents: Conductivity standards 1413 µS/cm and 12.88 mS/cm (14 ml each), conditioning solution (4 ml), dropper, user manual and quick start guide Manufacturer's item number: 3201077523 Note: How can I tell if I have an old or new device? If your Pocket Tester is marked ‘4-cell’, you have the latest version of this device. In this case, you will need the replacement sensors listed in the cross-selling section, as well as the standard and conditioning solutions. These have been specially optimised for the new Pocket Testers and are not suitable for older models. Please note: The battery is not included.

Horiba LAQUAtwin 4EC-33 Conductivity Tester – Successor model to the EC-33 Horiba LAQUAtwin Conductivity Tester with 4 calibration points (4EC-33) Find out more about the accuracy of the new successor models to the HORIBA pocket conductivity testers: Your ideal choice for precise conductivity measurements. Manufactured in Japan, the 4EC-11, 4EC-22 and 4EC-33 models represent the highest quality among pocket testers. They offer numerous benefits for users in laboratories, industry, aquaculture, water treatment, schools and universities, as well as for amateur gardeners. An overview of the new HORIBA Pocket Conductivity Tester series: Model 4EC-11: Water resistance, the ability to analyse very small samples from 0.12 ml, 3 calibration points and a conductivity measurement range of up to 19.9 mS/cm are the key features of these instruments. They are easy to operate and maintain, ensuring long-term reliability. Model 4EC-22: In addition to the features of the Model 4EC-11, this model offers a temperature display, four calibration points and an extended conductivity measurement range of up to 199.9 mS/cm. This instrument is ideal for demanding applications where the medium temperature must be recorded for detailed analysis. Model 4EC-33: With the widest measurement range, the ability to measure TDS and additional functions, this model sets new standards. It is designed for professionals who need to carry out highly precise measurements under varying conditions. Applications and benefits for the user: ‘Immersion’: Direct measurement is possible in solutions. For example, you can immerse the tester in a beaker and determine the value. ‘Scoop’: The hinged lid, which acts as a scoop here, allows you to easily take a sample from a hard-to-reach area. ‘Drops’: Efficient analysis of the smallest volumes. Thanks to their user-friendliness, durability and ‘Made in Japan’ quality, HORIBA pocket conductivity testers are a reliable solution for a wide range of measurement applications. LAQUAtwin 4EC-33: The pocket-sized conductivity and TDS meter The only portable meter that measures conductivity and total dissolved solids (TDS) directly in a 0.12 ml sample. You do not need a beaker to calibrate your meter or measure a sample. Simply place a few drops of the standard solution or sample onto the sensor. This method saves you time and prevents the wastage of your valuable sample. Your pocket-sized laboratory – practical for on-site use: Ideal for water quality testing in aquariums, food, beekeeping (honey) and many other applications HORIBA’s unique and compact meter combines an electrode, display and sample chamber. This enables simple and effective measurements directly on site, as the measurement is taken with just a single drop. Product features: Minimum sample volume: 0.12 ml Up to 4 calibration points Display of conductivity, TDS and temperature (0 °C to 50.0 °C) Automatic range selection Automatic calibration Automatic standard recognition: 84 μS/cm, 1413 μS/cm, 12.88 mS/cm and 111.8 mS/cm Automatic temperature compensation: 2 %/°C fixed Temperature setting: 5 to 40.0 °C 4 curves for total dissolved solids: TDS factor, adjustable from 0.4 to 1.0 (default is 0.5), EN 27888, 442, NaCl Automatic stabilisation/hold function Automatic switch-off (30 mins) Low battery indicator IP67 protection rating, waterproof and dustproof Replaceable sensor 400 hours battery life: continuous operation without backlight Material: ABS-epoxy resin housing & carbon sensor Display: special (monochrome) LCD with backlight Operating conditions: 5 to 40 °C, 85% relative humidity or less Warranty: 2 years – meter, 6 months – sensor Packaged in a handy carrying case Contents: Conductivity standards 1413 µS/cm and 12.88 mS/cm (14 ml each), conditioning solution (4 ml), dropper, user manual and quick start guide Manufacturer's item number: 3201077524 Note: How can I tell if I have an old or new device? If your Pocket Tester is marked ‘4-cell’, you have the latest version of this device. In this case, you will need the replacement sensors listed in the cross-selling section, as well as the standard and conditioning solutions. These have been specially optimised for the new Pocket Testers and are not suitable for older models. Please note: The battery is not included.

Milk fever or subclinical hypocalcemia (SCH) is a significant problem in dairy cows. The total calcium level in the blood of cows decreases after lactation. By directly measuring the ionized calcium level in the cow's blood, treatment can begin earlier and be more effective. The new HORIBA LAQUAtwin CA-11C was specifically developed for measuring ionized calcium in cow's blood. Ionized calcium reflects the current calcium concentration in the blood more accurately than the total calcium content, as it represents the freely available calcium ions. Technical Specifications Minimum sample volume: 0.3 ml 2 calibration points Automatic standard recognition Temperature calibration: 5 to 40.0 °C Automatic hold function / automatic stable measurement Automatic power-off: 30 minutes Low battery indicator IP67 protection rating, dustproof and waterproof Replaceable sensor Material: ABS epoxy resin Display: customized (monochrome) digital LCD display with backlight Operating conditions: 5 to 40 °C, relative humidity 85% or less Supplied with accessories (see specifications for further details) Manufacturer's article number: 1300084982 Additional Information We would like to inform you about an upcoming product update for the LAQUAtwin pocket meters. To enhance product safety and prevent accidental swallowing of batteries by infants and young children, HORIBA will introduce a new battery cover for all LAQUAtwin pocket meters. Overview of the Product Change Change: Battery cover for increased safety. Reason: Prevention of accidental swallowing of batteries. Production date: From January 2026 in Japan. As this change is currently being implemented, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery From November 2026, HORIBA products will be delivered without batteries. Existing stock may still contain batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Mobile Calcium Ion Tester from Horiba with Temperature Measurement – precise, compact, robust Handheld Ca²⁺ pocket tester with 2-point calibration and temperature display – ideal for water and environmental applications The mobile Horiba LAQUAtwin calcium ion tester measures both the Ca²⁺ concentration and the temperature of a sample. Equipped with an ion-selective sensor, a digital LCD display, and a minimal sample volume of only 0.3 ml (0.05 ml when using the sampling sheet), it delivers fast and reliable measurement results. Thanks to the integrated temperature display and automatic temperature compensation, calcium values can be measured accurately even under changing environmental conditions – making the device ideal for mobile applications. Mobile calcium ion tester for precise on-site measurements With two calibration points and automatic standard recognition (150 and 2000 ppm), the device can be flexibly adapted to different measurement situations. Temperature-compensated measurement, multiplicative compensation, automatic stability and hold modes, as well as automatic shut-off ensure easy and reliable operation. The tester is dustproof and waterproof according to IP67 and offers a long battery life of approximately 400 hours. It is supplied complete with standard solutions, sampling sheets, pipette, and batteries. Why calcium measurement is important – optimal results with the Horiba handheld tester Calcium is a key parameter in water, environmental, aquaculture, and food analysis. Calcium concentration influences water hardness, biological processes, coral growth, and product quality in beverages and food. Deviations can lead to ecological, technical, or quality-related impacts. A mobile calcium handheld tester allows fast analysis directly at the point of use without complex laboratory procedures. This makes it possible to detect changes immediately and take timely action. The Horiba LAQUAtwin calcium tester combines this flexibility with high measurement accuracy, simple operation, and a robust design. Typical applications of the Horiba LAQUAtwin calcium tester Aquaculture and corals Laboratories and schools Water treatment Beverages and food Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

Find out more about the accuracy of HORIBA’s pocket conductivity testers: your ideal choice for precise conductivity measurements. The EC-11, EC-22 and EC-33 models, manufactured in Japan, represent the pinnacle of quality in pocket testers. They offer numerous benefits for users in laboratories, industry, aquaculture, water treatment, schools and universities, as well as amateur gardeners. An overview of the HORIBA Conductivity Pocket Tester series: Model EC-11: Water resistance, micro-sample analysis from 0.12 ml and a conductivity measurement range of up to 19.99 mS/cm are the key features of these instruments. They are straightforward to use and maintain, ensuring long-term reliability. Model EC-22: Offers a larger temperature display and a wider measurement range. Perfect for advanced applications where the temperature of the medium must be determined for detailed analysis. Model EC-33: With the widest measurement range, TDS measurement capability and advanced features, this model sets new standards. For professionals who need to carry out the most precise measurements under varying conditions. Applications and benefits for the user: ‘Immersion’: Direct measurement is possible in solutions. For example, you can immerse the tester in a beaker and determine the value. ‘Scoop’: The hinged lid, which acts as a scoop here, allows you to easily take a sample from a hard-to-reach area. ‘Drops’: Efficient analysis of the smallest volumes. Thanks to their user-friendliness, durability and ‘Made in Japan’ quality, HORIBA pocket conductivity testers are a reliable solution for a variety of measurement applications. Manufacturer’s item number: 3999960126 LAQUAtwin EC-22: The world’s first pocket-sized conductivity meter Your mobile laboratory – for on-site use: Ideal for water quality testing in aquariums, foodstuffs and many other applications. HORIBAs unique compact analyser integrates the electrode, display and sample chamber to enable simple, effective on-site testing through direct measurement using a single drop. Minimum sample volume: 0.12 ml Up to 3 calibration points Conductivity and temperature display Automatic range Automatic calibration Automatic standard recognition: 1413 µS/cm, 12.88 mS/cm, 111.8 mS/cm Automatic temperature compensation: 2%/°C fixed Temperature calibration: 5 to 40.0 °C Automatic stabilisation / automatic hold measurement Automatic switch-off: 30 mins Low battery indicator IP67 rating: dust and water resistant Replaceable sensor 400-hour battery life: continuous operation without backlight Materials: ABS-epoxy housing and titanium coating with platinum-black sensor Display: custom (monochrome) LCD with backlight Operating conditions: 5 to 40°C, 85% or less relative humidity Warranty: 2 years – meter, 6 months – sensor Packaged in a handy carrying case Supplied with 1413 µS/cm & 12.88 mS/cm conductivity standards (14 ml each), conditioning solution (4 ml), 2 x CR2032 batteries, dropper, instructions and quick start guide Additional information We would like to inform you of an upcoming product update for the LAQUAtwin pocket-sized analysers. To enhance product safety and prevent accidental swallowing of the batteries by infants and young children, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for increased safety. Reason: To prevent accidental swallowing of batteries. Production date: from January 2026 in Japan Deliveries to EMEA distribution partners: from March 2026 As this change is currently being rolled out, you may receive mixed deliveries of the current and updated versions during the transition period. Please note: The EC4 replacement sensors, both old and new, are not compatible with each other. Similarly, the conditioning solutions for the old and new versions are not compatible with the respective device variants. How can you tell if you have an older or a new device? If your Pocket Tester is marked ‘4-cell’, you have the latest version of this device. In this case, you will need the replacement sensors listed in the cross-selling section, as well as the standard and conditioning solutions. These have been specially optimised for the new Pocket Testers and are not suitable for the older models.

Horiba LAQUAtwin Fluoride Ion Tester for Mobile Water Analysis Mobile fluoride hand tester with ion-selective electrode for fast and reliable on-site measurements The Horiba LAQUAtwin Fluoride Ion Tester was specifically designed to measure fluoride concentrations in various samples. Using its ion-selective measurement principle, it can detect fluoride in very small sample volumes (from 0.3 ml or 0.1 ml with sampling sheet) and covers a wide measurement range from 0.1 to 990 ppm. This makes the device versatile, suitable for applications from drinking water analysis to industrial processes. Mobile Fluoride Ion Tester for Precise Water and Environmental Analysis Equipped with a fluoride-selective electrode, the tester provides high measurement accuracy of ±2% of the reading. Automatic two-point calibration (1 ppm and 10 ppm) ensures reliable results. Additional features like Auto-Hold and Auto-Stable support accurate reading of stable values in the field. The IP67 waterproof housing protects the device from moisture and dust. A replacement sensor is also available to ensure long-term use of your Horiba LAQUAtwin Fluoride Ion Tester. Why Fluoride Measurement Is Important – Horiba Hand Tester as an Ideal Solution Fluoride content is a critical parameter in drinking water monitoring, environmental analysis, and in medical and industrial applications. Both excessively high and low fluoride concentrations can have health, ecological, or regulatory impacts, making regular monitoring essential. A mobile fluoride hand tester allows rapid on-site analysis without time-consuming laboratory testing. The robust IP67-protected design, replaceable sensor, and easy operation make the Horiba LAQUAtwin Fluoride Tester an ideal solution for routine checks, field measurements, and quality control. Applications of the Horiba Fluoride Pocket Tester Health and Dentistry: Experts use the F-11 to monitor fluoride levels in drinking water, a crucial measure to prevent dental diseases and promote oral health. Water Quality Monitoring: Environmental technicians use the tester to check fluoride concentrations in drinking water, wastewater, and natural bodies of water, ensuring compliance with environmental standards and safety regulations. Industrial Applications: To meet occupational and environmental safety standards, the F-11 allows rapid testing of process and wastewater in industries where fluoride compounds are used or produced. Environmental Analysis: The pocket tester delivers precise data for studying the effects of fluoride on biological systems, particularly where water quality monitoring and regulatory compliance are required. Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

Precise Nitrate Tester for Plants – Mobile NO₃⁻ Analysis On-Site Horiba Nitrate Ion Pocket Tester Kit for fast and accurate on-site results The Horiba LAQUAtwin Nitrate Ion Hand Tester (NO3-11C) in its practical analysis kit is your mobile laboratory for reliable determination of nitrate ions and temperature in plant sap samples. With a wide measurement range of 6 to 9900 ppm NO₃⁻ and automatic temperature compensation, the device provides fast and accurate results. The ion-selective electrode ensures precise NO₃⁻ measurements, while the digital backlit display allows quick and easy reading of values. Mobile nitrate analysis kit for plants, water, and environmental monitoring The kit contains the handheld tester, five pipettes, three measuring cups, a plant sample press, standard solutions, and sampling sheets. This setup allows for rapid and reproducible analysis of plant sap without the need for additional laboratory equipment. The device is dust- and waterproof, features automatic standard recognition, Auto-Stabil and Auto-Hold functions, and has a long battery life, making it ideal for mobile use in the field, greenhouse, or laboratory. Why nitrate measurement in plants is important – and why a mobile kit is ideal Nitrate content in plants is a key indicator of nutrient supply, plant growth, and agricultural product quality. Excessively high or low nitrate levels can negatively impact yield, plant quality, and environmental compatibility. A mobile nitrate hand tester allows direct analysis of plant sap on-site, without time-consuming laboratory procedures. Fertilization and irrigation measures can be precisely adjusted, and over- or under-supply can be detected early. The Horiba LAQUAtwin NO3-11C provides a precise, fast, and practical solution for this purpose. Typical applications for the Horiba Nitrate Analysis Kit Aquaculture and coral monitoring Aquaristics Horticulture Beverage and food production Laboratories and schools Environmental monitoring Water treatment Water conditioning Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

The LAQUAtwin Nitrate Ion Handheld Tester (NO3-11C) included in the analysis kit is pre-set by the factory to the relevant calibration points 30PPM and 300PPM for soil analysis. Manufacturer Part No. 3200689164  | B-742 Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Horiba LAQUAtwin Nitrate Ion Tester NO3-11 for Precise On-Site Measurements Handheld tester with 2-point calibration, ideal for water and environmental measurements The Horiba LAQUAtwin Nitrate Ion Tester (NO3-11) is a portable device for direct determination of nitrate ions (NO3) and temperature in liquids and samples. Thanks to the ion-selective electrode and compact design, the tester delivers fast and reliable results. The integrated temperature unit enables temperature-compensated analysis and clearly displays both nitrate and temperature values on the digital LCD display. Mobile Nitrate Ion Tester for Precise On-Site Analyses The integrated temperature measurement enables temperature-compensated analysis and shows both nitrate and temperature values. Only very small sample volumes are required, minimizing sample consumption and increasing efficiency in daily use. The tester can be set up with up to two calibration points, with features such as automatic standard recognition, adjustable calibration values, and multiplication compensation for flexibility. Only minimal sample volumes are needed for each analysis, reducing sample usage and improving efficiency. Why Nitrate Measurement Is Crucial – and a Pocket Tester from Horiba Is Ideal Nitrate measurement plays a central role in agriculture, water management, and environmental monitoring. Elevated nitrate concentrations can affect drinking water quality, stress ecosystems, and contribute to over-fertilization. At the same time, nitrate is an essential nutrient for plants, and targeted control is vital for sustainable agriculture. A mobile nitrate pocket tester enables rapid on-site analysis without time-consuming laboratory tests. This allows early detection of contamination, immediate action, and reliable monitoring of legal limits. The Horiba LAQUAtwin NO3-11 combines this flexibility with high measurement accuracy and easy operation – ideal for routine checks and scientific applications. The tester can be configured with up to two calibration points. Features like automatic standard recognition, adjustable calibration values, and multiplication compensation provide high adaptability to different sample types and measurement conditions. Typical Applications of the Horiba LAQUAtwin Nitrate Ion Tester (NO3-11) Agriculture: To optimize fertilizer use, promote plant growth, and minimize environmental impact, farmers and agronomists use the tester to monitor nitrate levels in soils and irrigation water. Water Quality Management: To maintain nitrate concentrations within safe limits, the NO3-11 is used in water management to check drinking and wastewater quality. Environmental Monitoring: The NO3-11 allows environmental technicians and scientists to quickly analyze nitrate contamination in rivers, lakes, and groundwater, ensuring compliance with environmental standards and identifying pollution sources. Research and Development: The tester is used by scientists in environmental science, hydrology, and soil science to conduct detailed studies of the nitrogen cycle and the effects of nitrates on ecosystems. Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.