Horiba LAQUAtwin pH Meter
The pH value indicates the acidic or basic character of an aqueous solution. The higher the concentration of hydrogen ions in the solution, the lower the pH value.
A dilute aqueous solution with a pH value of less than 7 is considered acidic, with a pH value equal to 7 neutral, and with a pH value greater than 7 basic or even alkaline.
Application examples:
Soil pH for nutrient availability.
Soil pH is a measure of the acidity or alkalinity of the soil. On the pH scale, solutions with a pH of 7 are called "neutral solutions," less than 7 are called "acidic solutions," and greater than 7 are called "basic or alkaline solutions."
The optimum soil pH for healthy growth varies by plant. In general, however, most plants tolerate a soil pH of 6.0-7.5 because the majority of nutrients are available for uptake in this pH range.
In highly acidic soils, aluminum and manganese can become highly available and toxic to the plant, while the occurrence of calcium, phosphorus, and magnesium become lower.
Also, in highly alkaline soils, for example, the concentration of phosphorus and most other micronutrients are reduced.
Accordingly, depending on how the soil is planted, it is useful to know the plant's preferred pH and test the soil for it.
Soil pH can be determined by mixing a soil sample with water and placing the resulting aqueous solution on the sensor and measuring it within a few seconds.
The pH determination will indicate whether the soil is suitable for the plant being grown or may need to be adjusted for optimal plant growth.
pH of cement and concrete for flooring.
Fresh concrete is normally very alkaline and above the neutral point of pH 7. However, if the alkalinity in a concrete subfloor is too high, it can cause the flooring adhesive not to bond properly with the concrete subfloor.
Especially when laying floor tiles, for example, it is very important that the subfloor has a certain pH value in order to bond with the tile adhesive.
To quickly determine the correct pH of the concrete for installing the floor covering or its composite, the Horiba LAQUAtwin pH pocket meter can provide a quick, easy solution, saving time and money.
pH in plant tissue
To classify plant health, the pH value in plant tissue can be determined. At pH levels above 6.4, plants can become susceptible to insect attack, and at pH levels below 6.4, plants can become susceptible to other diseases.
Thus, the goal should be an optimum pH of 6.4 to allow for healthy plant growth. Laboratory analysis of tissue samples is helpful, but often does not provide results for several days or weeks.
Again, a quick alternative method for diagnosing plant health is offered by the LAQUAtwin pH meter.
A few drops of the plant juice of ripe leaves, which can be obtained by Horiba's juice press, are sufficient to determine the pH value.
The highly sensitive sensor determines the corresponding value in a short time.
Other areas of application include the food industry, the industrial production of paints and varnishes, and aquaristics for water quality analysis.
Since the sensor does not dry out, the Horiba Pockettester can be stored dry without any problems.
All Horiba LAQUAtwin pocket testers are dustproof and waterproof.
Application information
- Minimum sample volume: 0.1 ml (0.05 ml with sampling form B).
- pH-11: 2 calibration points, pH-, mV- display
- pH-22: 3 calibration points, pH-, mV- display
- pH-33: 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 stability / auto hold measurement
- Auto power off: 30 minutes
- Low battery indicator
- IP67 rating dust and waterproof
- Replaceable sensor
- 400 hours battery life: continuous operation without backlighting
- Material: ABS epoxy resin
- Display: custom (monochrome) LCD with backlighting
- Operating conditions: 5 to 40 °C, 85% or less relative humidity
- Warranty: 2 years - meter, 6 months - sensor
- Packed in convenient carrying case
- Supplied with pH 4.01 & 7.00 buffers (14ml each), 2 x CR2032 batteries, pipette, instruction manual and quick reference guide
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
Suitable HORIBA measuring instruments
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
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
To accurately calibrate and maintain the HORIBA LAQUAtwin Pocket Testers, HORIBA provides a special selection of buffer, calibration and standard solutions. A convenient pack size of 6 x 14 ml of these solutions meets the requirements of the pocket testers as only a few drops are needed for calibration. This specific pack size helps to reduce waste and optimize efficiency during regular calibrations. The solutions available cover a variety of measurement ranges, allowing users to select the appropriate solution to suit their individual analysis or measurement needs: - pH buffer solutions: Solutions with pH values of 4.01 or 7.00 are available to calibrate the pH measurement. With these buffers it is possible to precisely regulate and control the pH measurement function of the LAQUAtwin Pocket Tester.- Conductivity standard solutions: 1413 μS/cm standard solutions ensure that the conductivity measurement of your devices is carried out precisely.- NaCl standard solutions: 0.5% or 5.0% NaCl solutions are available for the calibration of salinity measurement.- Ion standard solutions: HORIBA provides standard solutions to calibrate ion selective measurements. HORIBA provides standard solutions for sodium, potassium, nitrate and calcium, available in different concentrations: from low (e.g. 150 ppm) to high concentrations (e.g. 5000 ppm).- Fluoride ion standard solutions: For the calibration of fluoride measurements, HORIBA offers standard solutions with concentrations of 1 ppm and 10 ppm.- TISAB solution: A special solution for use with fluoride ion standard solutions to adjust the ionic strength of the sample for precise fluoride measurements.- ORP standard solution: For the calibration of redox measurements (ORP), HORIBA offers a solution with a redox potential of 225 mV. With these special solutions, the HORIBA LAQUAtwin pocket testers always provide accurate and reliable measurement results. The integrity of their measurement data and the lifetime of their devices can be ensured by regular calibration with these specifically formulated solutions. It is of great importance to select the appropriate calibration solution and standard solution to maintain the accuracy of measurements and ensure the reliability of water quality measurements in various applications. Manufacturer Part No. 3999960108
To accurately calibrate and maintain the HORIBA LAQUAtwin Pocket Testers, HORIBA provides a special selection of buffer, calibration and standard solutions. A convenient pack size of 6 x 14 ml of these solutions meets the requirements of the pocket testers as only a few drops are needed for calibration. This specific pack size helps to reduce waste and optimize efficiency during regular calibrations. The solutions available cover a variety of measurement ranges, allowing users to select the appropriate solution to suit their individual analysis or measurement needs: - pH buffer solutions: Solutions with pH values of 4.01 or 7.00 are available to calibrate the pH measurement. With these buffers it is possible to precisely regulate and control the pH measurement function of the LAQUAtwin Pocket Tester.- Conductivity standard solutions: 1413 μS/cm standard solutions ensure that the conductivity measurement of your devices is carried out precisely.- NaCl standard solutions: 0.5% or 5.0% NaCl solutions are available for the calibration of salinity measurement.- Ion standard solutions: HORIBA provides standard solutions to calibrate ion selective measurements. HORIBA provides standard solutions for sodium, potassium, nitrate and calcium, available in different concentrations: from low (e.g. 150 ppm) to high concentrations (e.g. 5000 ppm).- Fluoride ion standard solutions: For the calibration of fluoride measurements, HORIBA offers standard solutions with concentrations of 1 ppm and 10 ppm.- TISAB solution: A special solution for use with fluoride ion standard solutions to adjust the ionic strength of the sample for precise fluoride measurements.- ORP standard solution: For the calibration of redox measurements (ORP), HORIBA offers a solution with a redox potential of 225 mV. With these special solutions, the HORIBA LAQUAtwin pocket testers always provide accurate and reliable measurement results. The integrity of their measurement data and the lifetime of their devices can be ensured by regular calibration with these specifically formulated solutions. It is of great importance to select the appropriate calibration solution and standard solution to maintain the accuracy of measurements and ensure the reliability of water quality measurements in various applications. Manufacturer Part No. 3999960109