Whatman^® PTFE membrane filters

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

High chemical resistance and mechanical strength

One of the major applications for the PTFE membrane is the clarification of corrosives, solvents, and aggressive fluids. This includes the important requirement in HPLC analysis for sample filtration where any solid particles can cause permanent damage to the column. The 0.5 µm pore size is normally used. Air and gas sterilization make use of the hydrophobic characteristics of PTFE membrane filters and their ability to stop aqueous aerosols. Pore sizes of 0.2 µm and 0.5 µm are typically used. Sterile* venting of vacuum manifolds, fermentation vessels, and filtrate tanks and containers utilize PTFE 0.2 µm membranes.

Global SIAL customers (excluding Japan) can now order any product from the Cytiva Life Sciences consumables portfolio (prepack only) using GE′s product numbering system.

The legacy GE Whatman products that use the SIAL "Z" product numbering system will be discontinued and directly replaced with a product number using a "WHA" prefix plus the GE product code. For reference, the legacy "Z" product number is identified as a synonym on the "WHA" product number listing.

This product has been replaced by WHA10411205-ALDRICH | Whatman PTFE membrane filters, TE 37 (circles), 1.0 μm, 25 mm, 50/pk

Whatman is a registered trademark of Cytiva