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Ceramic pot filters usually have a diameter of about 30 cm by 25 cm deep, with an 8 litre capacity. Two variations of ceramic filters, flat-bottom and round-bottom, are currently manufactured.
==History and social context==
Locally produced ceramics have been used to filter water for hundreds of years. Today, 150,000 filters are used in Central America, Asia and Africa.
CARE, UNICEF, Red Cross amongst others use the filter.
