PT – Physico-chemical Testing

Equipments used to detect phyisco-chemical parameters in water samples, such as Chlorine, Fluoride, Nitrate, and many more.

PC Turbidity Tube

Art. Nr.: 117402

Simple, Safe and Independent. A very practical and very easy to use tool for visual measurement of water turbidity which is very often convincing in practice.

An essential test prior to water treatment by chlorination (Note: Chlorine is an effective disinfectant where water turbidity is below 5 NTU) and in ongoing water quality monitoring.

A very practical and user-friendly tool for visually measuring water turbidity. It has repeatedly proven its worth in remote locations and is consistently reliable in practical applications.



PC Visual Color Comparator – pH and chlorine

Art. No.: 118311

The Visual Color Comparator Test is an easy to use tool for measuring free/residual chlorine, total chlorine and pH (acidity) of water samples which is very often convincing in practice.

Why measuring chlorine and pH? In many cases testers want to know if a water was disinfected or if the residual chlorine (=free chlorine) level is still sufficient to protect the drinking water from recontamination. The Ideal level of free-residual chlorine is said to be 0,2-0,5 mg/L. Desinfection with chlorine is more effective at a pH value below 7,5.

The practical visual color comparator test that makes000080 measuring free and total chlorine, as well as pH of water samples easy and user-friendly. 

The pocket-sized test uses long-lasting and cost-efficient reagents, making it the perfect solution for remote locations. 

Simple, safe and independent!



LETZTESTER – Ultimate Visual Color Comparator Kit

Art. No.: 1164

The LETZTESTER Kit is an easy to use and comprehensive tool for measuring Alkalinity | Aluminum | Ammonia | Chloride | Chlorine free and total | Copper | Colour | Fluoride | Iron | Manganese | Nitrate | Nitrite | pH | Phosphate | Total Hardness and many more parameters.

Priority parameters defined by the World Health Organisation to monitor easily with this kit:

Residual Chlorine: Ensures water is disinfected and safe from disease causing bacteria of fecal origin. Ideal level is 0.2-0.5 mg/L. Chlorination of water systems is more efficient at pH < 7.5 and turbidity < 5 NTU.

Fluoride: Watch for teeth mottling at 1.5-4 mg/L, or skeletal fluorosis at > 4 mg/L. WHO limit: 1.5 mg/L.

Nitrate: High levels harm infants and pregnant women, causing “blue baby syndrome” and birth defects. WHO limit: 50 mg/L.

Manganese: Affects water’s taste, odor, and appearance. Can lead to water rejection by consumers. WHO limit: 0.4 mg/L.

The LETZTESTER is an easy to use visual test kit that can be used by laymen in rural areas.

The reagents are the same as the LETZTEST digital photometer, so the reagents can be used for both kits. The kit can be equipped according to your parameter needs

  • No maintenance or calibration
  • independent of electricity or batteries
  • the long-lasting reagents are cost-efficient, non-toxic and do not require cooling
  • Rapid dissolving tablet reagents
  • Ongoing colour scale on a parameter stick
  • Conventient boxes for transport and storage
  • Easy push through buster


LETZTEST Multimeter

Art. No.: 1165

The LETZTEST Multimeter measures various parameters in a very easy way. It works quickly and is suited for the use in remote locations. It will be available soon. Contact us for more information.

Without requiring additional reagents the LETZTEST Multimeter measures various water parameters, such as conductivity, salinity (total dissolved solids), pH, Temperature and ORP (Redox). The test result is displayed on the device within seconds after dipping it in the water sample.



LETZTEST Photometer

Art. No.: 1166

Our new LETZTEST Photometer will be available soon: 

Highly accurate readings on 18 parallel wavelengths, Bluetooth-USB-WiFi-GSM-connections, powerful software and app, synchronized over a cloud-service, large HD touch display and the option to connect test probes.3 sensors with 6 wavelengths each are connected to each other. Correspondent LEDs are set up at 180° as well as at 90° to enable NTU-Turbidity, PTSA and Fluorescein measurements as well.

Whilst normal Photometers perform tests on one selected wavelength only, the LETZTEST Photometer receives data from 18 different wavelengths in parallel with each measurement, covering the key parts of UV and IR section of the Spectrum and the full VIS range.



LETZTEST Visual Arsenic Test Kit

Art. No.: 481303-5 (50 tests) Art. No.: 481304 (100 tests) Art. No.: 481298 (500 tests)

The visual arsenic test kit offers the best value on the market. Based on the latest technology, our test kit delivers accurate results in just a few minutes without requiring any technical expertise. Unlike other water quality tests, there are no dangerous chemicals required. Straight forward and safe to use, easy to store and easy to

transport, it’s the perfect choice for remote locations.Winner of the 2003 WEF Innovative Technology Award

  • Only 3 reagents and one strip
  • Non-toxic reagents
  • Ideal for field testing requiring no technical training
  • No other equipment needed (no batteries, power or instruments required)
  • Completely non-technical
  • 14 minutes procedure
  • Can be used with little knowledge of English (reagents clearly marked ‘1’, ‘2’ and ‘3’)