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Polyethersulfone (PES) Membrane is hydrophilic and low protein binding. No external wetting agents are required, resulting in low extractables. PES membrane generally offers fast flow rate and better chemical resistance than cellulose acetate membranes. PTFE Membrane is strong, highly porous, and inert to most chemically aggressive solvents, strong acids, and bases. Chemical and thermal limitations are imposed by the backing material.
NylonMembrane is strong, inherently hydrophilic, and compatible with a broad range of aqueous solutions including alcohols and solvents used in HPLC work.New low extractable Nylon membranes combine the solvent resistance of Nylon with a membrane that exhibits very low extractables. Nylon is commonly used for general laboratory filtration, and filtration of HPLC samples prior to injection. Nylon binds protein, and should not be used when maximum protein recovery is important. Nylon can be sterilized by autoclaving at 120, gamma radiation, or ethylene oxide.Polypropylene (PP)Polypropylene membrane is a hydrophilic membrane that exhibits a wide range of chemical compatibility to organic solvents. PP membranes are a good choice for filtration of HPLC samples when performing protein analysis by chromatography. In addition to being highly solvent resistant, these membranes are low non-specific adsorbing membranes, which results in maximum protein recovery for critical analysis. PP membranes are also well suited for biological sample filtration.
Teflon(PTFE)Teflon?(Polytetrafluoroethylene) is hydrophobic, and chemically resistant to all solvents, acids and bases. PTFE, membrane does not impart any extractables to the filtrate. PTFE is an ideal membrane for transducer protectors, since it blocks water vapor. PTFE is ideal for filtering and de-gassing chromatography solvents.
Update Date:2012-05-30 21:30:03
chemical filter membrane