Pall GHP Polypropylene membrane will be discontinued effective October 31st, 2019. This discontinuation affects devices including Filter Plates, Syringe Filters, Centrifugal Devices and Membrane Filter Discs. Acroprep™ Filter Plates with GHP Membrane, Pall Laboratory Supplier: Pall Laboratory. AcroPrep™ Advance. 8282. 89233-866PK 200.59 ...