Water quality parameter
Free chlorine testing in Ethiopia
Free chlorine is the disinfectant left in the water after treatment. Measuring it at the tap shows whether the dose held all the way through the network or was used up on the way. Palintest reads free chlorine by the DPD method, on a colour comparator for a quick check or on a photometer when you need a number you can record.
Why it matters in Ethiopia
WHO guidance for drinking water is a free chlorine residual of 0.2 to 0.5 mg/L at the point of delivery. On long gravity lines and in tankered supply the residual falls between the plant and the household, so utilities, NGOs and camp operators test at several points on the same run rather than only at the source.
12 products in the Wagtech Trading catalog measure Free chlorine.
Instruments and kits
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- In stock in Addis Ababa
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Reagents and consumables
- Supplier lead time
- In stock in Addis Ababa
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How to run this test
Step-by-step Palintest instructions for the photometer test, with a picture for each step. The sheets show the Lumiso photometer. The same tablets and steps work on the Photometer 7100 and 7500. To choose the test on those photometers, see the Photometer 7500 (Bluetooth) manual and the Photometer 7100 manual.
Instrument manuals
- Wagtech Potalab+ manual (PDF on palintest.com, 6.4 MB)
- Palintest Lumiso Expert manual (PDF on palintest.com, 3.9 MB)
All manuals and test instructions for Palintest instruments and Wagtech kits