Trade Name. Millex ®. Description. Millex-GV Syringe Filter Unit, 0.22 µm, PVDF, 33 mm, gamma sterilized. Overview. This item is a direct replacement for SLGV033RB in countries where restricted. Background Information. Sterile Millex filter units are available in a larger 33 mm housing with either MCE, PVDF or PES membranes. Faster flow rate: