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Ceramic Silver Pot (CSP) filter

1,100 bytes added, 23:39, 14 May 2012
Created page with "CSP filter (Ceramic Silver impregnated Pot model). <br>Photo: NWP. A new alternative to conventional ceramic candle filters is the CSP..."
[[Image:CSP filter.jpg|thumb|right|250px|CSP filter (Ceramic Silver impregnated Pot model). <br>Photo: NWP.]]

A new alternative to conventional ceramic candle filters is the CSP filter.This model has a pot-shaped ceramic filtering element that is treated with colloidal silver. It has a bigger capacity and is easier to produce locally than candle filters. Also leakages are easier to detect than in candle filters so there is less risk in use.

Evaluations, including a USAID-funded test in Nicaragua, indicate that CSP filters remove turbidity and harmful bacteria that cause diarrhoea, cholera and other waterborne diseases.Maintenance consists of cleaning with a brush and changing the ceramic element every 2-3 years. If filled twice a day the filter produces enough for a family of six.

Field studies have shown that investment in a filter is “paid back”within 3 to 6 months because of savings on expenses for medicines, fuel wood and labour. In Nicaragua, Guatemala and Cambodia the production of this filter is a commercial activity and production is starting up in six other countries.
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