Why are black polycarbonate membranes better than other membranes for counting bacteria?
A. Black polycarbonate membranes are better than cellulose membranes for the direct counting of bacteria, because they have a uniform pore size and a flat surface that retains all of the bacteria on top of the filter. Although cellulose filters also retain all of the bacteria, many become trapped inside the filter where they cannot be counted. top of page Sterlitech Membrane Filter Home Page. Polycarbonate Membrane Track Etch Home Page. Polyester Membrane Home Page.
