Tisch Scientific MCE Membrane Filters, White w/Black & Blue Grid, 0.45 µm, 47 mm, Sterile, 200 Pack, SF14709. Regular Price $118.39 Price $102.95. Add to Cart. Add to Wish List. Tisch Scientific Nylon Membrane Filter, 0.45 µm, 47 mm, Nonsterile, 200 Pack, SF13880. Regular Price $106.69 Price $92.77.