Also reported in the BBC 3 years ago some research from the NSF on using sari cloth to filter cholera.http://news.bbc.co.uk/2/hi/health/2640307.stmhe method reported above will only work if the water reaches +50C for one hour. Thus limiting this method geographically. Abusive comment hidden. (Show it anyway.)
http://news.bbc.co.uk/2/hi/health/2640307.stm
he method reported above will only work if the water reaches +50C for one hour. Thus limiting this method geographically.