Compact pocket tester for measuring conductivity, TDS, and temperature in the high measurement range. Features a waterproof housing, automatic temperature compensation, and a dual-line display for both mobile and stationary use. Basic Conductivity-High/TDS/Temperature Pocket Tester for rapid conductivity measurement in the high range The Basic Conductivity-High/TDS/Temperature pocket tester was developed for the rapid determination of conductivity, TDS, and temperature in samples with higher conductivity values. Thanks to its compact size, the device is suitable for both mobile measurements and daily use in laboratories, educational settings, and water analysis. This handy device allows for the direct display of conductivity or TDS values alongside the current temperature on its dual-line screen. This ensures that all key measurement data is available simultaneously and is easy to read. For ease of use, the pocket tester features automatic calibration, automatic temperature compensation, and a stability indicator. These functions facilitate convenient measurement and simplify daily operation. The replaceable probe further extends the device's service life. The waterproof and buoyant housing makes the tester particularly well-suited for use in damp environments. An automatic switch-off function and battery level indicator ensure reliable operation, even during frequent mobile use. Technical Data Measurement parameters: Conductivity | TDS | Temperature Measurement range: 0.00 to 20.00 mS/cm | 10.00 ppt | 0–60 °C Resolution: 0.01 mS/cm / 0.01 ppt / 0.1 °C / 0.1 °F Temperature compensation: Automatic Your benefits at a glance Specially designed for higher conductivity ranges Waterproof and buoyant housing Dual-line display for simultaneous viewing of key measurements Automatic temperature compensation (ATC) Automatic calibration Replaceable probe for long-term device use Typical application areas Water analysis Laboratory applications Process control Water treatment Frequently Asked Questions How exactly does the device measure conductivity, TDS and temperature simultaneously? The device measures all three values in a single test and displays them directly on the screen. Is the tester really waterproof for everyday use? Yes, the device is waterproof and can be used without any problems in damp environments. Can I replace the probe if it breaks? Yes, the probe is replaceable and can be easily swapped out if necessary. What applications is the Basic Conductivity-High/TDS/Temp. Pocket Tester suitable for? It is suitable for water analysis in horticulture, aquariums, hydroponics and general water testing. How often do I need to calibrate the device? Regular calibration is recommended, particularly with frequent use or after prolonged storage. How easy is it for beginners to use? It is very easy to use and can be quickly understood even without prior knowledge.

Main features  LCD display  Display of calibration points  Stability display  pH range: -2 ... 16 pH. Resolution 0.01 pH / 1 ... 3 calibration points / 5 stored technical buffers  mV function for testing the pH electrodes  Redox range: -1000 ... + 1000 mV / Redox calibration at a point defined by the user  Conductivity range: 0.01 μS ... 199.9 mS / 1 ... 3 calibration points / 3 stored conductivity buffers  Reference temperature 20/25 °C selectable  Suitable exchange electrode: 880849

Pocket-size conductivity/temp. Meter with replaceable electrode The Basic conductivity/temp. pocket tester  is a waterproof, handy and accurate meter for fast as well as accurate measurement of conductivity and temperature. This new waterproof Pocket-size conductivity/temp. Meter include features such as a replaceable probe, temperature in °C or °F, automatic temperature compensation,battery level indicator, [#dspacer#][#dspacer#]stability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing.   Basic conductivity/temp. pocket tester  shows on the dual-level LCD the EC (3999 µS/cm) or TDS (2000 ppm) value. It also displays the temperature from 0.0 to 60.0°C (or 32.0 to 140.0°F) on the secondary level at the same time.

Main features LCD display Display of calibration points Stability display pH value measurement / pH measuring range: 0 ... 14 / 1... 2 calibration points / 1...2 calibration points

Range:0.00 to 14.00 pH0.00 to 20.00 mS/cm 0.00 to 10.00 ppt 0.0 to 50.0 °C / 32.0 to 122.0 °FResolution:0.01 pH0.01 mS/cm / 0.01 ppt 0.1 °C / 0.1 °FAccuracy (@25°C)0.05 pH2% FS (EC/TDS0.5 °C / ±1 °FTDS factor0.45 to 1.00 (CONV)Temperature CompensationAutomatic, with ß=0.0 to 2.4%/°CCalibrationAutomatic, 1 point for EC and 1 or 2 points for pHProbereplaceable Environment0 to 50°C; 100% RH max.Battery Type4 x 1,5V; IEC LR44, A76Battery Life:Approx. 100 hours of useAuto-off:After 8 min. of non-useDimensions: 200 x dia 38 mmWeight: ca. 100 g

measuring range:0.00 to 14.00 pH0 to 3999 µS/cm 0 to 2000ppm0.0 to 50.0 °C / 32.0 to 122.0 °FResolution:0.01 pH1 uS/cm1 ppm 0.1 °C / 0.1 °FAccuracy (@25°C)0.05 pH2% FS (EC/TDS0.5 °C / ±1 °FTDS factor0.45 to 1.00 (CONV)Temperature CompensationAutomatic, with ß=0.0 to 2.4%/°CCalibrationAutomatic, 1 point for EC and 1 or 2 points for pHProbereplaceable Environment0 to 50°C; 100% RH max.Battery Type4 x 1,5V; IEC LR44, A76Battery Life:Approx. 100 hours of useAuto-off:After 8 min. of non-useDimensions: 200 x dia 38 mmWeight: ca. 100 g

Waterproof hand-held meter for fast pH/temperature measurement in liquids The Neomeris pH/T Pocket Tester is a waterproof hand-held meter for fast and accurate measurement of pH and temperature in liquids. The temperature sensor and pH electrode can be replaced with a new sensor or electrode when worn.  Calibration is made automatically in 1 or 2 points with memorized standard and NIST buffer sets. Auto power OFF saves battery power after non-use. The double-junction electrode can be replaced in a very fast and simple way! The modular design allows easy electrode and battery replacement.

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.

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 pH Handheld Tester – Ideal for Water and Environmental Analysis Precise pH measurements on-site – compact, reliable, and easy to use The Horiba LAQUAtwin pH tester is ideal for water quality testing in rivers, drinking water, and process water. With a measurement range of 0.0 to 14.0 pH and a 2-point calibration, the tester is suitable for a wide range of pH analyses. Just a single drop of sample provides quick and reliable measurement results. The tester combines electrode, display, and sample container in a robust IP67-rated housing that is dust- and waterproof. The digital display with backlight shows both pH and mV values. Features such as automatic stability detection and Auto-Hold simplify operation. With up to 400 hours of battery life, the tester is suitable for extended measurement series. Included are calibration buffer solutions (pH 4.01 & 7.00), batteries, pipette, instruction manual, and a carrying case. Handheld pH tester for fast and precise results With its wide measurement range and 2-point calibration, the Horiba LAQUAtwin pH tester is suitable for a variety of pH analyses. Even a single drop of sample is enough to obtain fast and accurate results. Its compact design makes the mobile pH tester highly user-friendly and allows on-site measurements without complex sample preparation or laboratory infrastructure. Robust, waterproof design with comprehensive features The tester integrates the electrode, display, and sample container in a robust IP67-rated housing that is dust- and waterproof. The digital backlit display clearly shows pH and mV values. Features like automatic stability detection and Auto-Hold simplify daily use. With a battery life of up to 400 hours, the tester is suitable for long measurement series. The package includes calibration buffer solutions (pH 4.01 & 7.00), batteries, pipette, instruction manual, and a practical carrying case. Typical applications of the Horiba LAQUAtwin pH Pocket Tester Aquaculture and corals Aquariums Beer, beverages, and food Heating systems Laboratories and schools Horticulture Water treatment 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 Deliveries to EMEA distribution partners: From March 2026 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.

Mobile pH Tester with 3-Point Calibration for On-the-Go Use Horiba LAQUAtwin pH Tester – ideal for water and environmental analysis The Horiba LAQUAtwin pH Tester pH-22 is compact, robust, and designed for mobile use. With up to three calibration points and a measurement range of 0.00 to 14.00 pH, this device delivers high precision and reliability. Direct measurement with just a single drop of sample provides fast results. Features such as automatic buffer recognition, temperature compensation, and Stabil/Hold functionality make daily operation simple and convenient. Mobile precision pH tester for reliable on-site measurements The tester combines electrode, display, and sample container in a dust- and waterproof IP67 housing, making it ideal for field and laboratory applications. The digital backlit display shows pH and mV values clearly and accurately. Automatic shut-off and battery status indicators ensure convenient operation. The package includes calibration buffer solutions (pH 4.01 and 7.00), batteries, a pipette, and a quick-start guide. Why accurate pH measurement is critical – and why a handheld tester is ideal pH is a key parameter in water, environmental, and process analysis because it significantly influences chemical reactions, biological processes, and material stability. Even small deviations can substantially impact water quality, product quality, or process safety. A mobile handheld pH tester allows fast, reliable measurements directly on site. Changes can be detected immediately, and corrective actions implemented without delay. The Horiba LAQUAtwin pH-22 combines this flexibility with high measurement precision, making it ideal for field, laboratory, and routine applications. Typical applications for the Horiba LAQUAtwin pH handheld tester Aquaculture and coral monitoring Beer, beverage, and food production Heating systems Laboratories and schools Environmental analysis Water treatment Horticulture 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 Deliveries to EMEA distribution partners: From March 2026 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.

Manufacturer Part No. 3999960124 LAQUAtwin PH-33: The world's first pocket-sized PH meter Your mobile laboratory - for use on site: Ideal for water quality testing in aquatic, drinking and process water and many other applications. HORIBA's unique compact meter integrates electrode, display and sample container to enable simple, effective on-site testing by direct measurement with a single drop. Minimum sample volume: 0.1 ml (0.05 ml with sampling sheet B) Up to 5 calibration points pH, mV and temperature display Automatic calibration Automatic buffer recognition: USA & NIST pH buffers Automatic temperature compensation Temperature calibration: 5 to 40.0 ºC Automatic stable / automatic hold measurement Automatic switch off: 30 min. Low battery indicator IP67 rating dust and waterproof Replaceable sensor 400 hours battery life: continuous operation without backlight Material: ABS epoxy Display: customised (monochrome) LCD with backlight Operating conditions: 5 to 40°C, 85% or less relative humidity Warranty: 2 years - meter, 6 months - sensor Packed in a practical carrying case Supplied with pH 4.01 & 7.00 buffers (14ml each), 2 x CR2032 batteries, dropper, instructions and quick reference guide 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.

Precise Potassium Ion Measurement on the Go – Mobile, Reliable, and Easy Precise potassium ion measurement with 2-point calibration and integrated temperature display The Horiba K-11 Potassium Pocket Tester was designed to determine potassium in a wide variety of samples with high precision. Thanks to the ion-selective electrode and the digital LCD screen with backlight, the tester is perfect for mobile water quality and environmental analyses. The minimal sample volume of only 0.3 ml (0.05 ml with sampling sheet) ensures reliable results even with small sample sizes. With its 2-point calibration and automatic standard recognition, the device can be flexibly adapted to different measurement conditions. The IP67 rating for dust and water protection, along with a long battery life of up to approximately 400 hours, makes the tester highly reliable for mobile use. Technical Features for Reproducible Potassium Measurements The potassium tester covers a wide measurement range from 4 to 9,900 ppm (mg/L) and additionally displays temperatures up to 50 °C with a resolution of 0.1 °C. The integrated temperature compensation ensures stable results even under changing environmental conditions. Automatic standard recognition, adjustable calibration values, and multiplication compensation guarantee high reproducibility across different sample types. This makes the K-11 suitable for both routine and demanding analytical tasks. Why Potassium Measurement Is Important – Ideal with the Horiba K-11 Hand Tester Potassium is an essential parameter in water, environmental, agricultural, and food analysis. In water bodies, potassium content affects water quality, in soils it is a key nutrient for healthy plant growth, and in food it plays an important role for nutrition and labeling requirements. A mobile potassium hand tester enables rapid on-site analysis without time-consuming laboratory testing. Changes can be detected immediately, and decisions can be made right away. The Horiba K-11 combines this flexibility with high measurement accuracy and ease of use – ideal for fieldwork, routine checks, and scientific studies. Where Can It Be Used? Environmental Monitoring: The K-11 is a fast and precise measurement tool for environmental technicians and scientists monitoring potassium concentrations in water bodies to ensure water quality and identify contamination sources. Agriculture: The K-11 allows farmers and agronomists to measure potassium in soil. This is crucial for fertilizer application and improving plant growth. Easy evaluation of soil extracts enables precise nutrient requirement determination. Food Industry: The tester is used by quality assurance personnel to check potassium content in beverages and food. These measurements are important for product development, health assessments, and compliance with nutritional labeling requirements. Teaching, Research, and Development: By deepening the understanding of potassium’s role in biological and chemical processes, the K-11 serves researchers and educators as a useful tool for experimental studies and educational purposes. 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 Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. 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.

Mobile Sodium Ion Tester from Horiba with Temperature Measurement – precise and robust High-precision sodium ion tester with 2-point calibration – ideal for water and environmental analysis The Horiba LAQUAtwin Na-11 sodium ion tester was specifically designed for accurate measurement of sodium concentrations in a wide range of samples. The device enables direct on-site measurements. Its clear display shows both the Na⁺ concentration and the sample temperature in a single step, making field, laboratory, and greenhouse work significantly more efficient. Mobile sodium ion tester for precise on-site measurements Featuring 2-point calibration and automatic standard recognition (150 and 2000 ppm), the instrument can be easily adapted to different measurement requirements. The integrated temperature display and automatic temperature compensation ensure accurate results even under fluctuating environmental conditions. The robust IP67 housing is dustproof and waterproof, making the tester suitable for demanding daily use. With a battery life of approximately 400 hours, reliable long-term operation is ensured. The tester is supplied with standard solutions, sampling sheets, batteries, and matching pipettes for immediate use. Why sodium measurement matters – and why a handheld tester is the ideal solution Measuring sodium ions plays a crucial role in water, environmental, food, and agricultural analysis. Excessively high or low sodium concentrations can significantly affect water quality, soil structure, plant growth, and the quality of food products and drinking water. Regulatory limits and quality standards further require regular monitoring. A mobile sodium ion handheld tester enables fast and precise analysis directly at the point of use, without time-consuming sampling or laboratory analysis. The Horiba LAQUAtwin Na-11 combines this flexibility with high measurement accuracy and ease of use, making it ideal for routine monitoring, quality control, and research applications. Typical applications for the Horiba sodium ion tester Environmental monitoring: Measurement of sodium concentrations in surface and groundwater to assess water quality and ensure compliance with environmental standards. Food and beverage production: Testing sodium levels in food and beverages for quality assurance, product development, and regulatory compliance. Agriculture: Monitoring sodium content in irrigation water and soils to support plant health and optimize water management. Research & development: Use in laboratories for experimental studies on sodium ion behavior under varying conditions. Education: Utilized in schools and universities to demonstrate the use of ion-selective electrodes in analytical chemistry. 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.

HORIBA X-51 – Digital Simulator for pH, ORP, Ions, Dissolved Oxygen and Temperature Checking Measuring Instrument Functions and Simulating Sensor Signals Reliable measurement results require not only correctly functioning sensors but also properly operating measuring instruments. If implausible measurement values or deviations occur, it is necessary to determine whether the cause lies in the sensor or in the signal processing of the measuring instrument. The HORIBA X-51 Digital Simulator is a testing instrument designed to simulate defined electrical sensor signals. It enables functional testing of compatible measuring instruments without requiring an actual measurement signal from a water sample. The simulator generates electrical substitute signals for the measurement parameters pH, oxidation-reduction potential (ORP), ion-selective measurement (ION), dissolved oxygen (DO) and temperature (TEMP). This makes it possible to check the response of a measuring instrument to predefined input signals and verify important signal processing functions. One of the main applications is the regular functional testing of measuring instruments. The HORIBA X-51 particularly supports the verification of linearity and temperature compensation functions. Unlike a water analysis instrument, the simulator does not directly measure water parameters in a sample. Instead, it provides defined electrical input signals that can be used to check the behaviour of a connected measuring instrument. This makes the HORIBA X-51 particularly suitable for servicing, technical troubleshooting, regular instrument inspections and quality assurance in measurement technology. Simulated Measurement Parameters of the HORIBA X-51 The digital simulator provides different electrical substitute signals for testing compatible measuring instruments. The type of output signal depends on the respective measurement parameter. pH Value: Simulation of a corresponding electrode voltage signal to verify the pH measurement function. Oxidation-Reduction Potential (ORP/mV): Output of defined voltage signals to check mV measurement and signal processing. Ion-Selective Measurement (ION): Simulation of electrical voltage signals from ion-selective electrodes to test compatible ion measuring instruments. Dissolved Oxygen (DO): Provision of an electrical substitute current signal for testing corresponding dissolved oxygen measuring instruments. Temperature (TEMP): Simulation of a temperature-dependent resistance signal corresponding to the behaviour of a thermistor. The simulated signals are used to verify the electrical inputs of measuring instruments and their associated evaluation functions. They do not replace measurements of actual water samples or comprehensive testing of connected sensors. Functions and Features Simulation of Defined Electrode Voltage Signals For pH, ORP and ion-selective measurements, the HORIBA X-51 provides electrical substitute voltage signals. These correspond to theoretical input signals of the respective electrodes. The connected measuring instrument can therefore be supplied with predefined signals. By evaluating the displayed values, it is possible to determine whether the signal processing operates within the specified test criteria. Current Signal for Dissolved Oxygen Measurement To test the dissolved oxygen measurement function, the simulator generates an electrical substitute current signal. This allows the behaviour of compatible dissolved oxygen measuring instruments to be examined independently of an actual water sample. The simulation helps distinguish between possible faults in the sensor unit and problems with processing the electrical input signal. Simulation of Temperature-Dependent Resistance For temperature testing, the HORIBA X-51 provides an electrical substitute resistance corresponding to the signal of a thermistor. This allows the temperature measurement function and temperature-dependent calculations of compatible measuring instruments to be checked. Verification of Linearity Linearity describes how consistently a measuring instrument responds to different input signals within its specified measuring range. With the HORIBA X-51, defined test signals can be applied and compared with the displayed measurement values. This supports the identification of possible deviations in signal processing. Checking Temperature Compensation In various electrochemical measurement methods, temperature influences the calculation of measurement values. For this reason, corresponding measuring instruments feature temperature compensation functions. The HORIBA X-51 supports the verification of these functions by simulating suitable electrical input signals. Support for Troubleshooting If implausible values are displayed during water analysis, several possible causes must be considered. These may include contaminated or damaged sensors, connection problems and faults in the measuring instrument electronics. By applying a defined substitute signal, it is possible to check whether the measuring instrument processes this signal as expected. This helps systematically narrow down potential sources of error. For Regular Functional Testing The digital simulator can be used for recurring inspections to check the behaviour of compatible measuring instruments using defined input signals. The evaluation of test results is based on the technical specifications of the respective measuring instrument and the applicable testing procedures. Typical Applications The HORIBA X-51 is suitable for various testing and service tasks in electrochemical measurement technology. Laboratory Analysis: Functional testing of compatible pH, ORP, ion and dissolved oxygen measuring instruments. Service and Maintenance: Verification of electrical signal processing during regular instrument inspections. Technical Troubleshooting: Identification of possible causes of implausible or deviating measurement displays. Quality Assurance: Support for documented functional testing of measuring instruments. Linearity Testing: Comparison of predefined electrical input signals with displayed measurement values. Temperature Compensation: Verification of temperature-dependent measuring instrument functions. Technical Customer Service: Systematic testing of compatible measuring instruments during maintenance and service work. Research and Development: Support for functional testing of suitable electrochemical measurement systems. Advantages of Digital Sensor Simulation Simulation of electrical sensor signals for pH, ORP, ION, DO and temperature. Testing of compatible measuring instruments without an actual water sample. Support for verifying measuring instrument linearity. Checking temperature compensation functions. Systematic identification of possible error sources in signal processing. Suitable for regular functional testing and technical service work. Support for traceable documentation of test results. Multiple simulation functions combined in one testing instrument. Technical Information and Downloads The HORIBA X-51 Digital Simulator is designed to simulate theoretical electrical input signals for compatible measuring instruments. Substitute voltage signals are provided for pH, ORP and ion measurements, substitute current signals for dissolved oxygen measurements, and corresponding substitute resistance signals for temperature measurements. Information on the available simulation ranges, connection options, operating functions and testing procedures can be found in the instruction manual in the download section. Before use, check the compatibility of the simulator with the respective measuring instrument, as well as the required connections and testing specifications. Note on Use: The HORIBA X-51 is a simulator designed to verify electrical measuring instrument inputs and associated evaluation functions. It does not replace the calibration and maintenance of actual sensors or any comprehensive metrological verification of the measurement system that may be required. 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 X-52 – Digital Simulator for Conductivity and Temperature Testing Conductivity Meters and Simulating Sensor Signals Reliable conductivity measurements require both the sensors and the connected measuring instruments to function correctly. If implausible measurement values or deviations occur, it is necessary to determine whether the cause lies in the sensor, temperature compensation or signal processing of the measuring instrument. The HORIBA X-52 Digital Simulator is a testing instrument designed to simulate defined electrical substitute signals for conductivity and temperature measurement (COND/TEMP). It enables functional testing of compatible conductivity meters without requiring an actual water sample. The simulator provides theoretical electrical input signals that replicate the behaviour of corresponding sensors. This makes it possible to check how a connected measuring instrument responds to predefined input signals. For conductivity measurement, the HORIBA X-52 generates an electrical substitute resistance. For temperature measurement, a temperature-dependent substitute resistance signal is provided, corresponding to the behaviour of a thermistor. One of the main applications is the regular functional testing of conductivity meters. The HORIBA X-52 particularly supports the verification of linearity and temperature compensation functions. Unlike a conductivity meter, the simulator does not directly measure water parameters in a sample. Instead, it provides defined electrical input signals that can be used to check the signal processing of the connected measuring instrument. This makes the HORIBA X-52 particularly suitable for servicing, technical troubleshooting, regular instrument inspections and quality assurance in electrochemical measurement technology. Simulated Measurement Parameters of the HORIBA X-52 The digital simulator provides electrical substitute resistances for testing compatible conductivity meters. Two essential measurement functions are taken into account. Electrical Conductivity (COND): Simulation of a defined electrical substitute resistance to verify conductivity measurement and the associated signal processing. Temperature (TEMP): Simulation of a temperature-dependent resistance signal corresponding to the electrical behaviour of a thermistor. This enables testing of the temperature measurement function and supports verification of temperature compensation. The simulated signals are used to verify the electrical inputs of measuring instruments and their associated evaluation functions. They do not replace measurements of actual water samples or comprehensive testing of the connected conductivity sensor. Functions and Features Simulation of Defined Conductivity Signals In conductive conductivity measurement, the electrical conductivity of a liquid is determined based on its electrical characteristics. Evaluation takes into account the properties of the sensor used. The HORIBA X-52 provides defined electrical substitute resistances for testing compatible measuring instruments. These serve as theoretical input signals for the conductivity measurement function. The connected measuring instrument can therefore be tested using predefined electrical signals. By evaluating the displayed conductivity values, it is possible to determine whether signal processing operates within the specified test criteria. Simulation of Temperature-Dependent Resistance The electrical conductivity of a water sample depends on temperature. For this reason, many conductivity meters also measure temperature and take it into account when calculating temperature-compensated measurement values. For this purpose, the HORIBA X-52 provides an electrical substitute resistance corresponding to the signal of a thermistor. This makes it possible to verify whether the connected measuring instrument processes a corresponding temperature signal as expected. Verification of Linearity Linearity describes how consistently a measuring instrument responds to different input signals within its specified measuring range. With the HORIBA X-52, defined substitute resistances can be applied and compared with the displayed measurement values. This test supports the identification of possible deviations in the signal processing of the conductivity meter. Checking Temperature Compensation Since the conductivity of a liquid changes with temperature, temperature compensation is important for the comparability of many conductivity measurements. The HORIBA X-52 supports verification of this function by simulating suitable electrical input signals for conductivity and temperature. This makes it possible to check whether the measuring instrument processes the simulated signals according to its specified settings and calculation functions. Support for Troubleshooting If implausible or fluctuating values are displayed during conductivity measurement, several possible causes must be considered. These may include contaminated or damaged conductivity sensors, incorrect temperature measurement, connection problems or faults in the measuring instrument electronics. By applying a defined substitute signal, it is possible to check whether the measuring instrument processes this signal as expected. This helps systematically narrow down possible sources of error and carry out further testing or maintenance steps more effectively. Testing Without an Actual Water Sample No conductivity standard solution or water sample is required for electrical functional testing of the measuring instrument. Instead, defined electrical substitute signals are used. This enables targeted testing of the measuring instrument electronics, independently of influences caused by the characteristics of an actual water sample. However, testing with a simulator does not replace the necessary calibration and inspection of the actual sensor using suitable reference solutions. For Regular Functional Testing The digital simulator can be used for recurring inspections to check the behaviour of compatible conductivity meters using defined input signals. The evaluation of test results is based on the technical specifications of the respective measuring instrument and the applicable testing procedures. Typical Applications The HORIBA X-52 is suitable for various testing and service tasks in conductivity and temperature measurement technology. Laboratory Analysis: Functional testing of compatible conductivity meters in laboratory applications. Service and Maintenance: Verification of electrical signal processing during regular instrument inspections. Technical Troubleshooting: Identification of possible causes of implausible or deviating conductivity readings. Quality Assurance: Support for documented functional testing of conductivity meters. Linearity Testing: Comparison of predefined electrical substitute resistances with displayed measurement values. Temperature Compensation: Verification of the temperature measurement function and temperature-dependent calculations. Technical Customer Service: Systematic testing of compatible measuring instruments during maintenance and service work. Research and Development: Support for functional testing of suitable conductivity measurement systems. Advantages of Digital Sensor Simulation Simulation of electrical substitute signals for conductivity and temperature. Testing of compatible conductivity meters without an actual water sample. Support for verifying measuring instrument linearity. Verification of temperature measurement and temperature compensation functions. Systematic identification of possible error sources in signal processing. Suitable for regular functional testing and technical service work. Support for traceable documentation of test results. Conductivity and temperature simulation combined in one testing instrument. Technical Information and Downloads The HORIBA X-52 Digital Simulator is designed to simulate theoretical electrical input signals for compatible conductivity meters. Electrical substitute resistances are provided for conductivity measurement, while corresponding thermistor-equivalent resistance signals are provided for temperature measurement. Information on the available simulation ranges, connection options, operating functions and testing procedures can be found in the instruction manual in the download section. Before use, check the compatibility of the simulator with the respective measuring instrument, as well as the required connections and testing specifications. Note on Use: The HORIBA X-52 is a simulator designed to verify electrical measuring instrument inputs and associated evaluation functions. It does not replace the calibration and maintenance of actual conductivity sensors or any comprehensive metrological verification of the measurement system that may be required. 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.

Main features  LCD display  Display of calibration points  Stability display  pH range: -2 ... 16 pH. Resolution 0.01 pH / 1 ... 3 calibration points / 5 stored technical buffers  mV function for testing the pH electrodes  Redox range: -1000 ... + 1000 mV / Redox calibration at a point defined by the user  Conductivity range: 0.01 μS ... 199.9 mS / 1 ... 3 calibration points / 3 stored conductivity buffers  Reference temperature 20/25 °C selectable  Suitable exchange electrode: 880849

Main features  LCD display  Display of calibration points  Stability display  Conductivity range: 0.01 μS ... 199.9 mS / 1 ... 3 calibration points / 3 stored technical buffers.  Integrated temperature sensor  Suitable replacement electrode: 880853

IP Protection: IP67  With exchangeable probe

Main features LCD display Display of calibration points Stability display pH range: -2 ... 16 pH. Resolution 0.01 pH / 1 ... 3 calibration points / 5 stored technical buffers mV function for testing the pH electrodes Conductivity range: 0.01 μS ... 199.9 mS / 1 ... 3 calibration points / 3 stored conductivity buffers Reference temperature 20/25 °C selectable Suitable exchange electrode: 880848

IP Protection: IP67  With exchangeable probe