GHP (hydrophilic polypropylene) membrane is a versatile filter for aqueous and aggressive organic solvent-based solutions. Low protein binding membrane Acrodisc, Syringe Filter, GHP, 25 mm, 0.2 µm, Aqueous, 50/pkg. Acrodisc, Syringe Filter, GHP, 25 mm, 0.2 µm, Aqueous, 50/pkg, Polypropylene, 100 mL Sample Volume, 100 µL Hold up Volume.