Syringe Filter 0.22 found in: Purple Nylon Syringe Filters, 0.22 µm, Yellow Nylon Syringe Filters, 0.22 µm, Clear Nylon Syringe Filters, 0.22 µm, Syringe.. Denville Scientific Syringe Filters are constructed so that the sample must pass through the membrane, not leak around it.