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

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.

LAQUAtwin SALT-22: The world’s first pocket-sized salinity meter. Your mobile laboratory – for on-site use: Ideal for water quality testing in aquariums, foodstuffs and many other applications. HORIBAs unique compact meter integrates the electrode, display and sample chamber to enable simple, effective on-site testing through direct measurement with a single drop. Minimum sample volume: 0.3 ml (0.05 ml with sample sheet B) Display of salinity, mV and temperature Up to 2 calibration points Automatic calibration Automatic standard recognition: 0.5 & 5.0% NaCl (standard) Adjustable high and low calibration values Temperature calibration: 5 to 40.0 ºC Automatic stabilisation / automatic hold measurement Automatic switch-off: 30 mins Low battery indicator IP67 rated dust and waterproof Replaceable sensor 400-hour battery life: continuous operation without backlight Material: ABS-epoxy Display: custom (monochrome) digital LCD with backlight Operating conditions: 5 to 40 ºC, 85% or less relative humidity Warranty: 2 years – meter; 6 months – sensor Packaged in a handy carrying case Manufacturer’s item number: 3200689158 Supplied with 0.5% and 5.0% NaCl standards (14 ml each), 5 x Sample Form B, 2 x CR2032 batteries, pipette, instructions and quick guide Additional information We would like to inform you of an upcoming product update for the LAQUAtwin pocket meters. 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 phase. Please note: The salt exchange 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 older models.

Horiba LAQUAtwin SALT-11 NaCl / Saltwater (conductivity-based measurement principle) What is salinity? Salinity describes the concentration of dissolved salts in water and is a crucial parameter for the quality of drinking water, the health of aquatic organisms and production safety in the food industry. Our customers appreciate the intuitive operation of the LAQUAtwin SALT-11 and SALT-22 measuring instruments from HORIBA, as well as the accurate measurement results achieved with these portable handheld devices – directly on site and with a minimal sample volume. Precise salinity measurement – the mobile solution from HORIBA The Horiba LAQUAtwin Salz 4ECSalt-11 is a unique, compact measuring device from HORIBA that combines an electrode, display and sample container in a single unit. This enables simple and effective on-site measurements by taking a direct reading from just a single drop. Your pocket laboratory: The only pocket-sized meter that directly measures conductivity in a 0.12 ml sample and converts this into salinity or salt concentration. You do not need a beaker to calibrate the meter or measure a sample. Simply place a few drops of the standard solution or sample onto the sensor. This method saves you time and prevents the wastage of your valuable sample. Why is measuring salinity important? Salinity, i.e. the salt content of a liquid, is a crucial parameter in water quality, environmental analysis and food production. With a HORIBA salinity meter, you can obtain accurate results in real time and reliably monitor key quality parameters – simply, quickly and on the go. In aquaculture & fish farming: Salt content influences the growth, health and behaviour of fish and other aquatic organisms. In agriculture & irrigation: Salinity has a direct impact on soil quality and the uptake of nutrients by plants. In the food industry: Monitoring salt content is crucial for taste, shelf life and compliance with quality standards. In drinking water monitoring: Excessive salinity can impair water quality and must be monitored regularly. Product benefits of the HORIBA LAQUAtwin SALT models: Compact & portable: Ideal for mobile use in the field, laboratory or production environment. Fast results: Measurement using just a single drop of sample – perfect for on-site testing. Precise & reliable: High measurement accuracy for informed decisions in research and practice. User-friendly: Simple calibration, intuitive operation and waterproof design (IP67). Typical applications: Aquaculture & fish farms, agriculture & irrigation systems, food manufacturers & quality control laboratories, drinking water treatment plants & environmental authorities. Please note: The battery is not included.

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 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.

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164510 (10 Meter = U-51)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164499 (10 Meter = U-52G)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164505 (30 Meter = U-53G)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164503 (30 Meter = U-52)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164507 (10 Meter = U-53)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200158178 (2 Meter = U-53G)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164502 (10 Meter = U-52)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200156563 (2 Meter = U-52G)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164500 (30 Meter = U-52G)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164506 (2 Meter = U-53)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164508 (30 Meter = U-53)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164501 (2 Meter = U-52)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164509 (2 Meter = U-51)

Measure and Display 11 Parameters Simultaneously with Innovative Features, Newly Designed Control Unit and Sensor TechnologyDear customers, we will provide you with the item description in the next few days. You will find the technical data in the form of a table, which will give you a good overview, under the "Specifiactions" tab.  You are also welcome to take a look at the product flyer in the download area, which contains all the important information. Manufacturer article number:3200164504 (10 Meter = U-53G)