Filter Sheets - 40 cm x 40 cm (0.45 Micron) - 100 Sheets | MoreBeer
Filter Sheets - 20 cm x 20 cm (0.45 Micron) | MoreWine
Determination of parvovirus retention profiles in virus filter membranes using laser scanning microscopy - ScienceDirect
Millipore® Filter Membranes
At Least 11 Things You Didn't Know about Filtration (but you should, because you probably do it all the time) | Biocompare: The Buyer's Guide for Life Scientists