Rainfresh MP4U Gravity Filter

The filter setup consists of four Envirogard 7300G silver-impregnated ceramic cartridges in an upper 25L bucket over a sealed bottom 25L bucket with a spigot for dispensing water. It comes with a filter gauge for measuring the end-of-life of the ceramic candle, cleaning mesh, and the necessary hardware and pictoral instruction manual for installation.

Available during distributions from the partner NGO or through contacting the manufacturer

The four Envirogard 7300G silver-impregnated ceramic filter cartridges must be replaced after filtering 15,000 L or 12 months. The filter gauge is used after cleanings to measure wear on the ceramic filter and indicates end-of-life.

The Envirogard 7300G filter cartridges are tested and certified by CSA International to NSF53 for reduction of protozoan cyst (such as cryptosporidium & Giardia) to log 3.
The University of Arizona also found log 6 removal of bacteria including: E. coli, Salmonella typhimurium (typhoid), Vibrio Cholera, and Shigella (cause of dysentery) under very low turbidity conditions of <0.5 NTU.

No known safety risks if properly used and bottom bucket remains properly sealed against recontamination.