This 25 mm syringe filter with a Graduated Glass Fiber & Nylon membrane, for non-sterile filtration, has a 0.45 µm pore size used in clarifying of aqueous & Sterile PVDF Syringe Filters – Hawach. The PVDF membrane in the filters can be used in solvent filtration, air and gas filtration as well as samples in HPLC and GC. Technical Data