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The Watasol is simple a device which produces active chlorine from salt water using electrolysis. The device consists of two tungsten electrodes in a plastic container, and a transformer. The active chlorine forms hydrochloric acid when added to water. As the active chlorine has a very strong oxidizing power, is destroys almost all pathogenic germs including diarrhoeal diseases, dysentery, cholera, typhoid fever, salmonellosis and hepatitis A.

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! width="50%" style="background:#efefef;" | Advantages

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| valign="top" | -It allows for the local production of active chlorine, which is much cheaper than importing bleach tablets or other forms of chlorine, as it saves on import tariffs, transportation and storage costs. <br>