Pocket Testers – Compact Instruments for Fast On-Site Water Analysis

Pocket-size Conductivity/TDS/Temperature Meter with replaceable electrode This new waterproof Basic conductivity-high/TDS/temp. pocket tester for high measuring range  include features such as a replaceable probe, temperature in °C or °F, automatic temperature compensation, battery level indicator, stability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing.  [#dspacer#] [#dspacer#] Basic conductivity-high/TDS/temp. pocket tester for high measuring range shows on the dual-level LCD the EC (20.00 mS/cm) or TDS (10.00 ppt) 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 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 customizable Horiba WQ-300 series instruments.The high-quality digital multi-parameter handheld meters with their generous color LCD display with LED backlight (7 cm x 5.2 cm) are ideally suited for use in the field under all conditions and in direct daylight.Use our configurator to freely select the suitable measuring device of the WQ-300 Horiba series (1 to 3 channels), the measuring parameters (sensor cartridges) and desired cable length (with integrated sensor receptacle + digital module) according to your wishes and requirements. At a later stage, you can always connect another available measurement parameter to the device via the corresponding sensor cable or carry it in the case as a supplement. As with other handheld measuring devices from Horiba, a major advantage of these devices is that the measuring devices are highly resistant to shock, slipping and scratching thanks to a special rubber coating. Only four standard AA 2500 mAh batteries are required for operation, and to give you more flexibility when you are on the move, the WQ-300 series devices can also be powered by a powerbank or battery pack via the integrated USB interface. The IP67 certification, which certifies dustproofness and protection against temporary submersion for up to 30 minutes at a water depth of one meter, completes the overall professional package, along with the usual ergonomic design and ease of user operation.  Horiba attests to its outstanding product quality by offering a three-year warranty on the LAQUA WQ-300 series handheld meters. Other added values and features:During analyses, the user is supported by the display of operating instructions in the form of smiley icons, which is supplemented by an LED status display on the sensor. This is intended to prevent operating errors, which can lead to implausible measurement results. The design decision to install only a small number of control buttons and not to implement any nested user menus serves to ensure that the devices can be operated easily and safely even during discontinuous use as well as when used by other users.  The measuring instruments have an electrode wear indicator, a measuring stability indicator on the instrument and sensor, a locking function to "save" the currently measured value on the display, free naming of the measuring point (8 characters), automatic calibration functions, integrated sensor holders, self-diagnosis function, as well as GLP functions. The fold-out stand on the back of the instruments means that you always have your hands free to carry out your measurements easily and safely. Measurement data can be conveniently transferred to your computer or cell phone via USB or WiFi.All handheld meters of the 300 series are delivered in a reinforced measuring case for mobile use in the open air. This provides space for the meter, for electrodes and cables, for up to eight 60 ml bottles of buffer solutions including an integrated buffer solution bottle holder for easier calibration. Particularly noteworthy is the automatic sensor recognition of the instrument through the use of sensor cables with integrated digital sensor recording. Information about the sensor, calibration data as well as measurement settings are stored in the sensor recording and transmitted to the measuring instrument. In addition, calibration of all connected sensors is possible at the same time, since each sensor head independently stores the measurement and calibration data and transmits it to the WQ300 series measuring device.Optionally, there is the possibility to connect and use analog sensors via the Horiba BNC sensor adapter with the device, please contact us for this.Languages:GermanEnglishFrenchSpanishPortugueseChineseScope of delivery:WQ-300 series handheld meter in a carrying casethe digital electrode you have chosen, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptaclemanualManufacturer article number single measuring device WQ-310-K 1 channel: 3200832605 Note: Chloride sensor, if selected, is supplied without chloride ion strength regulator and chloride electrode filling solution. This must be procured by the customer. Without the filling solution the sensor can´t be used. Why We Use These Measuring Devices in Water Treatment Precise calcium control is a key element of efficient water treatment – from drinking water purification and process water management to environmental analysis. Elevated calcium levels can lead to scaling, pipe damage, energy losses, and disruptions in chemical processes. For this purpose, we offer tailored high-end solutions from the Horiba LAQUA WQ Series (WQ310-K, WQ320-K, WQ330-K) in our online shop, specifically designed to meet the needs of water technology:  WQ310-K: Single-parameter solution for targeted measurements • WQ320-K: Simultaneous monitoring of, for example, calcium and conductivity • WQ330-K: Three-channel measurement for complex real-time multi-parameter analyses Why We Rely on These Devices: • They provide reliable data for controlling and optimizing water treatment systems • They offer digital evaluation, documented results, and interfaces for process integration • They are robust, packaged in a practical analysis case, and thus also suitable for mobile on-site use • They allow calcium to be measured in combination with other parameters such as pH, conductivity, or redox – for a holistic and efficient approach

Thank you for your interest in our smart and customizable Horiba WQ-300 series instruments.The high-quality digital multi-parameter handheld meters with their generous color LCD display with LED backlight (7 cm x 5.2 cm) are ideally suited for use in the field under all conditions and in direct daylight.Use our configurator to freely select the suitable measuring device of the WQ-300 Horiba series (1 to 3 channels), the measuring parameters (sensor cartridges) and desired cable length (with integrated sensor receptacle + digital module) according to your wishes and requirements. At a later stage, you can always connect another available measurement parameter to the device via the corresponding sensor cable or carry it in the case as a supplement. As with other handheld measuring devices from Horiba, a major advantage of these devices is that the measuring devices are highly resistant to shock, slipping and scratching thanks to a special rubber coating. Only four standard AA 2500 mAh batteries are required for operation, and to give you more flexibility when you are on the move, the WQ-300 series devices can also be powered by a powerbank or battery pack via the integrated USB interface. The IP67 certification, which certifies dustproofness and protection against temporary submersion for up to 30 minutes at a water depth of one meter, completes the overall professional package, along with the usual ergonomic design and ease of user operation.  Horiba attests to its outstanding product quality by offering a three-year warranty on the LAQUA WQ-300 series handheld meters. Other added values and features:During analyses, the user is supported by the display of operating instructions in the form of smiley icons, which is supplemented by an LED status display on the sensor. This is intended to prevent operating errors, which can lead to implausible measurement results. The design decision to install only a small number of control buttons and not to implement any nested user menus serves to ensure that the devices can be operated easily and safely even during discontinuous use as well as when used by other users.  The measuring instruments have an electrode wear indicator, a measuring stability indicator on the instrument and sensor, a locking function to "save" the currently measured value on the display, free naming of the measuring point (8 characters), automatic calibration functions, integrated sensor holders, self-diagnosis function, as well as GLP functions. The fold-out stand on the back of the instruments means that you always have your hands free to carry out your measurements easily and safely. Measurement data can be conveniently transferred to your computer or cell phone via USB or WiFi.All handheld meters of the 300 series are delivered in a reinforced measuring case for mobile use in the open air. This provides space for the meter, for electrodes and cables, for up to eight 60 ml bottles of buffer solutions including an integrated buffer solution bottle holder for easier calibration. Particularly noteworthy is the automatic sensor recognition of the instrument through the use of sensor cables with integrated digital sensor recording. Information about the sensor, calibration data as well as measurement settings are stored in the sensor recording and transmitted to the measuring instrument. In addition, calibration of all connected sensors is possible at the same time, since each sensor head independently stores the measurement and calibration data and transmits it to the WQ300 series measuring device.Optionally, there is the possibility to connect and use analog sensors via the Horiba BNC sensor adapter with the device, please contact us for this.Languages:GermanEnglishFrenchSpanishPortugueseChineseScope of delivery:WQ-300 series handheld meter in a carrying casethe digital electrode you have chosen, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptaclemanualManufacturer article number single measuring device WQ-320-K 2 channel: 3200832606 Note: Chloride sensor, if selected, is supplied without chloride ion strength regulator and chloride electrode filling solution. This must be procured by the customer. Without the filling solution the sensor can´t be used.

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. 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.

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 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. 3999960126 LAQUAtwin EC-22: The world's first pocket-sized conductivity meter Your mobile laboratory - for use on site: Ideal for water quality tests in aquariums, food 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: 0.12 ml Up to 3 calibration points Conductivity and temperature display Automatic range Automatic calibration Automatic standard detection: 1413µS/cm, 12.88mS/cm, 111.8mS/cm Automatic temperature compensation: 2%/ºC fixed Temperature calibration: 5 to 40.0 ºC Automatically stable / automatically held measurement Automatic switch-off: 30 min. Low battery indicator IP67 rating dust and waterproof Replaceable sensor 400 hours battery life: continuous operation without backlight Materials: ABS epoxy housing and titanium coating with platinum black sensor 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 1413µS/cm & 12.88mS/cm conductivity standards (14ml each), conditioning solution (4ml), 2 x CR2032 batteries, dropper, instructions and quick reference guide

Manufacturer Part No. 3999960127 LAQUAtwin EC-33: The world's first pocket-sized conductivity meter Your mobile laboratory - for use on site: Ideal for water quality tests in aquariums, food 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: 0.12 ml Up to 3 calibration points Conductivity, TDS and temperature display Automatic range Automatic calibration Automatic standard detection: 1413µS/cm, 12.88mS/cm, 111.8mS/cm Automatic temperature compensation: 2%/ºC fixed Temperature calibration: 5 to 40.0 ºC 4 curves for the total dissolved solids content: TDS factor 0.4 to 1.0, EN 27888, 442, NaCl Automatically stable / automatically held measurement Automatic switch-off: 30 min. Low battery indicator IP67 rating dust and waterproof Replaceable sensor 400 hours battery life: continuous operation without backlight Materials: ABS epoxy housing and titanium coating with platinum black sensor 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 1413µS/cm & 12.88mS/cm conductivity standards (14ml each), conditioning solution (4ml), 2 x CR2032 batteries, drops, instructions and quick reference guide Horiba LAQUAtwin – Mobile Precision for Water Treatment The compact Horiba LAQUAtwin pocket testers deliver fast, accurate and user‑friendly on‑site measurement of key water parameters—directly from a single droplet. In the HeylNeomeris online shop, you’ll find carefully selected models designed for professional use in water treatment, environmental analysis, aquaculture, and laboratory routines. Why LAQUAtwin Devices Excel in Water Treatment: Ultra‑low sample volume: only 0.05 mL per measurement Rapid results: ideal for mobile checks and spot analyses Laboratory‑grade accuracy in a pocket‑sized instrument Effortless operation: no special training required IP67‑rated housing: waterproof, dustproof, and rugged for field use Key Applications in Water Treatment: Quick screening in drinking water testing or process water quality control Routine monitoring of parameters such as pH, conductivity, calcium, sodium, or nitrate Interim checks in laboratories or treatment plants where bench‑top instruments aren’t practical Perfect for service technicians, field engineers, and operators of small‑scale systems Sample Models Available in the HeylNeomeris Shop: Horiba LAQUAtwin pH‑11 – precision pH measurement Horiba LAQUAtwin EC‑33 – conductivity monitoring Horiba LAQUAtwin Na‑11, Ca‑11, NO₃‑11 – targeted ion analysis for sodium, calcium, and nitrate

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 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 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

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. 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. 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.

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

IP Protection: IP67   With exchangeable probe