Acrodisc, Syringe Filter, GHP, 25 mm, 0.2 µm, Aqueous, 50/pk . This part number has been discontinued by Pall. Waters inventory is limited. Part number 186009327 is the recommended replacement. Phenomenex Filtration Part: 25mm Acrodisc 0.45um GHP, Syringe . Filtration Part: PN_4562 25mm Acrodisc 0.45um GHP, Syringe Filter, 1000/Pk