Cellulose Acetate Membrane Filters

Polyethersulfone (PES) This is a general pupose membrane that provides excellent performance with most solutions when retentate recovery is of primary importance. Polyethersulfone Cellulose acetat membranes combine high flow rates and thermal stability with very low adsorption characteristics and are therefore excellently suited for use in pressure filtration devices. The membrane with 0.2µm is the filter of choice for sterile filtration of aqueous solutions, such as nutrient media, buffers and sera. The results of publications on adsorption are difficult to correlate, as mostly different test substances, conditions and detection methods were used, and the membranes were tested without previously being sterilized.