PVDF Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF15024. Regular Price $153.37 Price $133.37. Add to Cart. Tisch Scientific MCE Membrane Filters, White w/Black & Blue Grid, 0.22 µm, 47 mm, Sterile, 200 Pack, SF14708. Regular Price $118.39 Price $102.95.