The Chujio Filter is a CPF or Ceramic Pot Filter. Based on the Potters For Peace model, they are manufactured locally in Limuru, Kenya of a mixture by weight of terra-cotta clay, sand and sawdust. After press forming the filters are low-fired at between 860-1000 degrees centigrade allowing for porosity and then dipped in a water-colloidal silver solution. This solution is the agent that kills the bacteria in the water.
These filters can produce 2-3 liters of clean water per hour depending on water turbidity and last up to 5 years. The Center for Disease Control has documented a reduction in diarrheal incidence at 60-70%. These filters are low-tech, easy-to-maintain and eliminate 99.88% of all waterborne disease agents.
This filter has been extensively tested by MIT, Tulane University, University of Colorado and the University of South Carolina. Countless numbers of filters have been distributed worldwide by the Red Cross, Red Crescent, Doctors Without Borders, UNICEF, PLAN International, Project Concern International, Oxfam and USAID.