We offer high quality products at low cost to test for priority parameters in developing countries.

Our products are manufactured and distributed by the ISO 9001 certified company Letzner Pharmawasseraufbereitung GmbH in Germany.

LetzTest Tube

LetzTest Tubes are a presence/absence test to easily detect bacteria of fecal origin in drinking water. The test tubes have numerous advantages in their use in rural areas where a laboratory and qualified workforce ressources might not be available. 

Form: Dry test strip

Shelf life: 2 years

Art. no. : 116498 


LetzTest Household Water Test Kit

The Household Water Test Kit is a presence /absence test kit, protected by patent office, which detects bacteria of fecal origin in drinking water. The Kit has numerous advantages in its use in rural areas and with respect to the objective of education and sustainable behavior change. 

Art. no. : 113858 (english kit)

Art. no. : 118183 (french kit)

Art. no. : 118185 (spanish kit)


LetzTest Membrane Filtration Kit

The Membrane Filtration Kit contains all you need to perform the membrane filtration method to determine fecal bacteria in water quantitatively. A single-branch membrane filtration device (stainless steel), sterile membrane filters (100x), DRY E&C Plates (40x), vacuum syringe, portable alcohol candle, tubing, forceps (2 types), flasks, pipettes, brief (illustrated) and detailed instructions on how to perform the membrane filtration method for water samples including useful information about sampling techniques, sample volumes and documentation.


Outer Dimensions: 420 x 325 x 175 mm
Weight: 6.8 kg

Art. no. : 115433 

LetzTest Incubator 37°C - Electricity-Free

0Our patented, electricity-free incubator will revolutionize water quality testing in rural areas. Pre-prepated Dry plates aswell as Colilert Quanti-Trays fit perfectly into our incubator. Each Incubator comes with a robust temperature data logger. 


Operating temperature: 37°C  +/- 0,5 °C
Weight: 2 kg
Inner Dimensions: 320 x 260 x 70 mm

Art. no. : 115178


Discovery MX 10 Incubator

The Discovery MX10 incubator is specifically designed for areas of limited infrastructure and transportation options. 


Power supply – Adaptor – 100-240v AC @ 320 mA
Power supply – Incubator 12 Volts DC @ 1Amp
Temperature Control – MX Darlington switched solid state
Temperature Range – Ambient + 5 to 450C +/- 0.50C
Chamber Size (useable) – 11 x 13 x 70 (H) cm
External case size- (footprint) 27 x 21 x 10(H) cm
Total Weight – Inc cables & adaptor 1.2 Kg

Art. no. : 117955


LetzTest Liquid Sampler

Use the practical LetzTest Liquid Sampler to collect water samples from points where the sample can not be taken directly into the sample bottle or bag ( e..g. at a storage tank)


Volume: 350 ml
Length: 590 mm
Material: 1.4404 stainless steel

Art. no. : 117952

Compact Dry Plates - E.coli & Coliforms

The usage of our Compact Dry Plates E.coli & Coliforms is a simple and safe way for the determination and quantification of E.coli and other coliform bacteria in water.

  • Ready-to-use, simply add 1mL of pure water to activate the plate
  • Storage 5-40°C (no fridge needed!)
  • Shelf life 24 months
  • Max. 70 seconds „hands-on time“
  • Write sample ID on front part
  • Incubation time 24 hours at 35-38°C
  • AOAC, MicroVal and NordVal approved
  • ISO16140

Art. no. : 115177


Compact Dry Plates - E.coli

The usage of our Compact Dry E.coli Plates is a simple and safe way for the determination and quantification of E.coli and other coliform bacteria in water.

  • Ready-to-use, simply add 1mL of pure water to activate the plate
  • Storage 5-40°C (no fridge needed!)
  • Shelf life 24 months
  • Max. 70 seconds „hands-on time“
  • Write sample ID on front part
  • Incubation time 24 hours at 35-38°C

Art. no. : 116379


Membrane Filtration Membranes - Sterile Packed

Cellulose Nitrate membranes for microbiological analysis, grid print, diameter 47 mm, pore width 0.45 μm, individually & sterile packed.

100 pieces / pack

Art. no. : 114930 


Thio-Bags for Water Sampling - 100ml

Specially designed for sampling chlorinated water to test for fecal coliforms and other bacteria. Each bag contains a nontoxic, nonnutritive tablet containing 10 mg of active sodium thiosulfate to neutralize chlorine at the time of collection.

100 pieces / pack

Art. no. : 114928


Bags for Water Sampling - 100ml

For sampling unchlorinated water samples. Very easy and safe transportation compared to glass bottles that tend to break when the roads are in bad condition.

100 pieces / pack

Art. no. : 115407


Pooltester - for Chlorine & pH

The Pooltester is an easy to use tool for measuring free available chlorine, total chlorine and pH (acidity) of water samples. It is a visual, colour comparator test and uses reagent tablets, which colour the sample water water according to the presence of chlorine or the pH. LetzTest especially recommends this kit to test for residual chlorine in areas of limited infrastructure.

Note:  A small number of reagent tablets are included with the unit but larger quantities should be requested separately.
Phenol Red - for pH
DPD1 - for free/residual chlorine
DPD3 - for total chlorine (used with DPD1)

Art. no. : 118311

Reagent tablets

DPD1 - Free Chlorine - 250 pcs

Art. no. : 118312

DPD3 - Total Chlorine - 250 pcs

Art. no. : 118313

Phenol Red - pH - 250 pcs

Art. no. : 118314

Turbidity Tube

Keep it simple and safe! The easiest and most suitable way to measure turbidity in NTU in areas of limited infrastructure.

Art. no. : 117402


eXact® Micro 20 Smart Photometer™

The eXact® Micro 20 with Bluetooth® SMART is a powerful dual-wavelength photometer system that harnesses the technology to connect wirelessly to your smart device.

The Kit includes: Meter, carrying case, cleaning brush, acrylic calibration stick, mixing cap, & instructions. Space for up to 10 reagents to be fitted inside the kit. 


Reagents: Please click the button below.

Art. no. : 115931


eXact® pH+ Multi Meter Kit

The new eXact pH+ Smart Meter System with Bluetooth® SMART is perfect for the detection of pH, Conductivity, Salinity, TDS, Temperature, and ORP (separate probe) in water. An all new handheld multi-parameter pocket meter that works in conjunction with the eXact iDip® app for iOS and Android smart devices. The combination of this with the iDip® Photometer and the eXact iDip® app now allows for automatic calculations of formulas such as the Langelier Saturation Index.

Art. no. : 115945


Arsenic Quick™ II

 Arsenic is one of the chemicals with greatest health concern in drinking water testing. The health based guideline value for Arsenic in water is 0,01 mg/l.Arsenic Quick II for water quality testing was designed to give the user accurate results without sacrificing cost and time. Arsenic Quick II reports results in only 14 minutes. Additionally, there are no dangerous chemicals needed to run this water quality test kit.

Detection range: <1, 2, 3, 4, 5, 6, 7, 8, 10, 13, 20, 25, 30, 40, >50, >80, >120, >160 ppb (µg/L) - 14 minute procedure, 50 tests **ETV** . Key features:

  • Reagents are non toxic
  • Results in 12-14 minutes
  • Can be done in field - No other equipment needed (no batteries, power or instruments required)
  • Completely non-technical.
  • Can be used with little knowledge of English (reagents clearly marked '1', '2' and '3')

Art. no. : 115946


LetzTest office in Germany

Berrenrather Str. 260

D-50939 Cologne
Tel.: +49 (0) 157 / 89 62 75 36



LetzTest bureau en France

14, rue Simonis

F-67100 Strasbourg
Tel.: +33 (0)7 68 / 22 37-47



LetzTest production site / site de production

Letzner Pharmawasseraufbereitung GmbH


D-42499 Hückeswagen