F.A.Q 

A membrane filter is a matrix with channels which act as a screen and retains particles larger than the filter on the surface of the membrane. Membrane filters allow the retention of sub-micron particles and organisms. Microfiltration (MF)0.1 - 5.0 micron Ultrafiltration (UF)0.01-0.1micron Nanofiltration (NF) Reverse Osmosis (RO) 0.001micron (theoretical)