Whatman PTFE membrane filters are chemically stable and inert, making them suitable for use with aggressive organic solvents, strong acids, and alkalis.

The TE range features polypropylene support material for improved strength and handling. They are temperature resistant up to 120 °C, and can withstand aggressive solvents, liquids, and gases that damage other membranes.

One of the major applications for the polytetrafluoroethylene (PTFE) membrane is the clarification of corrosives, solvents, and aggressive fluids. This includes the important requirement for sample filtration in HPLC analysis where any solid particles can cause permanent damage to the column. The 0,5 µm pore sized is normally used for this.

Air and gas sterilization make use of the hydrophobic characteristics of PTFE membrane filters and their ability to stop aqueous aerosols, sterile venting of vacuum manifolds, fermentation vessels, and filtrate tanks and containers. Pore size 0,2 and sometimes 0,5 µm are generally used for these purposes.

Type: TE 37