PURIFICATION TECHNOLOGIES
Microporous Filtration
MICROPOROUS FILTRATION or submicron filtration uses a membrane or hollow fiber
with an absolute pore size of 0.2 micron that prevents any contaminant larger than
0.2 micron from passing through it. The submicron filters retain carbon fines from
the carbon cartridge, resin fragments from the deionization cartridges and any bacteria
that may have entered the system.
NCCLS considers water to be particulate free when
it has been passed through a 0.2 micron filter. Microporous membranes are generally
considered to be indispensable elements of a water purification system, unless they
are replaced by an ultrafilter.