HORIBA LAQUAtwin Potassium Ion Meter


Due to its great reactivity, the alkali metal potassium occurs in nature only in potassium compounds. It is one of the ten most abundant elements in the earth's crust and is an essential component of all body cells.

As an electrolyte, it regulates the water balance of the cells and the acid-base balance of the human body.

In industry and medicine, potassium is used, among other things, for the production of glass, aluminum, construction and colorants, foodstuffs, detergents or for dialysis and infusion solutions. Industrial agriculture uses it in fertilizers, as potassium is lost during harvesting and must be replaced.


Application examples:

Soil analysis

Potassium is a natural chemical element and a nutrient that occurs in every soil. The ideal potassium value is between 8 and 10 mg of potassium per 100g in light soils and between 13 and 25 mg in heavy soils.

Regular monitoring of nutrient levels - not only potassium (K) but also nitrate (NO3) and calcium (Ca2+) - not only maximizes yields if the ideal value is maintained, but also minimizes fertilizer use and environmental pollution.

Potatoes, tomatoes, pumpkins and cucumbers, for example, have a particularly high potassium requirement, because potassium regulates the water balance and is partly responsible for the healthy structure of cell walls. 

Excess potassium, on the other hand, can lead to root damage and corresponding growth disorders and inhibit the plant's magnesium uptake. 

Therefore, soil analysis should ideally always take into account the various soil parameters, as many soil nutrients can influence each other both positively and negatively.

With the handheld LAQUA Twin Potassium Ion Tester (K+) from Horiba, you can perform your soil analysis quickly and easily on site.

Freshwater aquaristics

In tap water, potassium is usually a deficient element, especially in relation to calcium and magnesium concentrations. 

Thus, the Horiba handheld potassium meter can also be helpful in freshwater aquaristics for water analysis. 

This is because both above and below water, the macro element influences photosynthesis and regulates the energy balance of the plant cell.

For checking a balanced ratio of potassium, magnesium and calcium in your aquarium, the respective individual water meters from Horiba offer you quick and easy sampling with immediate results.

Measuring sodium and potassium concentrations in the sweat of athletes

During regular sporting activity, not only the compensation of fluid loss through drinking, but also that of mineral loss are important and can subsequently put a great strain on the body.

Sweat consists mainly of water and the minerals dissolved in it. These in turn influence the acid-base balance in the body. Therefore, due to the loss during sweating, it is important to ensure an adequate supply of alkaline mineral compounds such as potassium, calcium and magnesium.

While calcium, and to a lesser extent magnesium, can be absorbed through good mineral water, potassium is hardly contained in mineral or tap water. In general, potassium, among other things, is often taken in too small quantities. For this reason, athletes in particular should make sure that they get enough potassium from their diet. Because potassium contributes to an optimal muscle function.

Its value can be determined quickly and easily using the Horiba Pocket Tester. 

As a "pocket laboratory", the LAQUAtwin hand-held potassium ion meter is therefore ideal for quick analyses, as it provides an accurate result in a wide range of applications with just a few sample drops. Samples no longer have to be submitted to a laboratory in a costly and time-consuming manner, but can provide results directly on site within a few seconds. 

In addition, because the sensor does not dry out, the Horiba pocket tester can be stored dry without any problems. 

All Horiba LAQUAtwin pockettesters are dustproof and waterproof.

Application information


  • Minimum sample volume: 0.3 ml (0.05 ml with sampling sheet B)
  • Up to 2 calibration points
  • Automatic standard detection: 150 & 2000ppm potassium (standard)
  • Changeable high and low calibration values
  • Multiplication compensation: 0.01 to 9.90
  • Temperature and mV display
  • Temperature calibration: 5 to 40.0 ºC
  • Auto-hold/auto-stable 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) digital LCD with backlight
  • Operating conditions: 5 to 40 ºC, 85% or less relative humidity
  • Warranty: 2 years - meter, 6 months - sensor
  • Packed in convenient carrying case
  • Supplied with 150 & 2000ppm potassium standards, 5 x sampling sheets B, 2 x CR2032 batteries, pipette, operating instructions and quick reference guide
Horiba LAQUAtwin Potassium Ion (K+) Tester with 2 calibration points and temperature measurement (K-11)
Product number: 895658
Measuring range: 4 to 9900 ppm (mg/L) - (0.1 to 250 mmol/L) | 2 to 5000 kg/10a (soil/water ratio 1:5) | 0 to 50.0 ºC | Measurement parameters: Potassium Ion | Temperature
Manufacturer Part No. 3200689160 LAQUAtwin KA-11 : The world's first pocket-sized potassium ion analyser. Your mobile laboratory - for use on site: Ideal for water quality testing in agriculture, 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: 0.3 ml (0.05 ml with sampling sheet B)        Up to 2 calibration points        Automatic standard detection: 150 & 2000 ppm potassium (standard)        Adjustable high and low calibration values        Multiplication compensation: 0.01 to 9.90        Temperature and mV display        Temperature calibration: 5 to 40.0 ºC        Auto Hold / Auto Stable measurement        Automatic switch-off: 30 min.        Low battery indicator        IP67 protection class, dust and waterproof        Replaceable sensor        400 hours battery life: continuous operation without backlight        Material: ABS epoxy resin        Display: user-defined (monochrome) digital LCD with backlight        Operating conditions: 5 to 40 ºC, 85% or less relative humidity        Warranty: 2 years - meter, 6 months - sensor        Packed in practical carrying case Supplied with 150 and 2000 ppm potassium standards, 5 x sampling sheets B, 2 x CR2032 batteries, pipette, user manual and quick reference guides

€365.00*

Suitable HORIBA measuring instruments

Horiba LAQUAtwin Calcium Ion (Ca2+) Tester with 2 calibration points and temperature measurement (Ca-11)
Product number: 895660
Measuring range: 4 to 9900 ppm (mg/L) - (0.1 to 250 mmol/L) | 0 to 50.0 ºC | Measurement parameters: Calcium Ion | Temperature
Manufacturer Part No. 3200689161 LAQUAtwin CA-11 : The world's first pocket-sized calcium ion analyser. Your mobile laboratory - for use on site: Ideal for water quality testing in agriculture, 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: 0.3 ml (0.05 ml with sampling sheet B)        Up to 2 calibration points        Automatic standard detection: 150 & 2000ppm calcium (standard)        Adjustable high and low calibration values        Multiplication compensation: 0.01 to 9.90        Temperature and mV display        Temperature calibration: 5 to 40.0 ºC        Auto-hold / auto-stable 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) digital LCD with backlight        Operating conditions: 5 to 40 ºC, 85% or less relative humidity        Warranty: 2 years - meter, 6 months - sensor        Packed in a practical carrying case Supplied with 150 & 2000ppm calcium standards, 5 x sampling sheets B, 2 x CR2032 batteries, dropper, instructions and quick reference guide

€365.00*
Horiba LAQUAtwin Sodium Ion Tester (Na+) with 2 calibration points and temperature measurement (Na-11)
Product number: 895657
Measuring range: 2 to 9900 ppm (mg/L) - (0.1 to 430 mmol/L) | 0 to 50.0 ºC | Measurement parameters: Sodium Ion | Temperature
Manufacturer Part No. 3200689159 LAQUAtwin NA-11 : The world's first pocket-sized sodium ion analyser. Your mobile laboratory - for use on site: Ideal for water quality testing in agriculture, plant breeding and 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: 0.3 ml (0.05 ml with sampling sheet B)        Up to 2 calibration points        Automatic standard detection: 150 & 2000ppm sodium (standard)        Adjustable high and low calibration values        Multiplication compensation: 0.01 to 9.90        Temperature and mV display        Temperature calibration: 5 to 40.0 ºC        Auto-hold / auto-stable 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) digital LCD with backlight        Operating conditions: 5 to 40 ºC, 85% or less relative humidity        Warranty: 2 years - meter, 6 months - sensor        Packed in a practical carrying case Supplied with 150 & 2000ppm sodium standards, 5 x sampling sheets B, 2 x CR2032 batteries, dropper, instructions and quick reference guide

€365.00*