PTFE

PTFE

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