SLGV033RS. Trade Name. Millex. Description. Millex-GV Syringe Filter Unit, 0.22 µm, PVDF, 33 mm, gamma sterilized. Background Information. Available in 4, 13, 25, 33, and 50 mm diameters with a variety of membranes, Millex® sterile syringe filters are ideal for sterilizing organic solvents, aqueous solutions or air/gas.