Water filters on the market today can't always stop bacteria from passing through. The problem is a structural one. It's hard to get the pore sizes to align properly, leaving room for the pathogens to ...
A low-cost water purification membrane capable of filtering out objects greater than one micron size and also killing E. coli bacteria has been developed by the Bangalore-based Indian Institute of ...
Coliform Bacteria: Less than one total coliform organism per 100 ml of water. Non-coliform Bacteria: Concentrations less than 200 organisms per 100 ml of water considered acceptable as long as the ...
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