Quality control of drinking water
To disinfect drinking water with active chlorine is, with doubt, beneficial. However, it does require the ability to control the right concentration of residual chlorine after disinfection. Nowadays, the prevalent methods of measuring residual chlorine are either costly, or dangerous, or not reliable enough for the concentrations usually found in drinking water.
Using DPD (diethyl-para-phenylene diamine) tablets is the most common way to control the quality of drinking water, in matters of chorine. Produced in industrialised countries, they are expensive and rarely available in developing nations. Moreover, being toxic, their use requires strict precautions. As such, DPD is not a sustainable solution for low-income countries.
Another common way to
measure
residual chlorine in water, especially practised by owners of swimming
pool, is using specially-prepared paper strips. Tests have shown,
however, that they are not sensitive enough for the quality control of
drinking water. They are too unreliable to ensure that the WHO
standards, necessarily stringent, are met.
WataBlue™ reagent
To meet this need, Antenna Technologies has developed a low-cost and non-toxic reagent: the WataBlue reagent.
With its sensitivity and long-term reliability, any user can carry out a safe and systematic quality control of drinking water. It is only in this way that the local, low-cost production of quality drinking water can be guaranteed and sustained.
The WataBlue reagent is given for free to anyone who buys a kit WATA.
- Download the user guide of WataBlue™ (pdf file, 447 Ko)
WataTest™ reagent
For those stakeholders who develop local chlorine-selling businesses, it is essential to be able to control the concentration of sodium hypochlorite (active chlorine) in the solution produced with WATA devices.
Antenna Technologies has therefore developed the WataTest, a non-toxic and inexpensive reagent, for users regularly produce active chlorine for drinking water chlorination or disinfection purposes.
The WataTest™ reagent is given for free to anyone who buys a WATA kit.
- Download the user manual of WataTest (pdf 1.38 Mo )