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Hydrophilic PTFE membrane - Code H Characteristics: Maximum chemical and pH resistance High flow rates with minimal aqueous extractables (<0.3 wt%) Optically clear when wetted with water Non-supported Applications Ideal for HPLC and other mixtures of aqueous and organic solvents Note: Autoclaving is not recommended since the membrane then will be hydrophobic Hydrophobic PTFE membrane, supported - Code J Properties: Thin, highly porous, behaves as an absolute retentive membrane Supported: Polypropylene laminated to one side to improve handling Inert to most chemically aggressive solvents, strong acids and bases Thermostable: Can be used up to 130 °C Applications Sterilize gases: Traps aqueous aerosols Air and gas venting: Allows gases to pass freely while blocking aqueous liquids, protect vacuum pumps and critical samples Sterilize and clarify strong acids and many other solvents incompatible with other membrane types Hydrophobic PTFE membrane - Code T Properties: Thin highly porous, behaves as an absolute retentive membrane Inert to most chemically aggressive solvents, strong acids and bases Operating temperature range: Up to 260 °C Applications Sterilize gases: Traps aqueous aerosols Air and gas venting: Allows gases to pass freely while blocking aqueous liquids, protect vacuum pumps and critical samples Sterilize and clarify strong acids and many other solvents incompatible with other membrane types