Polytetrafluoroethylene PTFE Syringe Filters, 0.45um, 4mm PTFE Syringe Filters, 0.22 um, 25mm, Double Luer Lock, PP Housing, Nonsterile, 100 per pack TSH-SPEC16251 $143.99 Ideal for laboratory small volume samples clarification and particles removal.Features and Benefits Easy to use Wide range of filter media Applicable to samples below 80mL Disposable design Quality