These sterile, pyrogen-free filters are constructed with two layers of polyethersulfone (PES) microporous membrane that is inherently hydrophilic, low in extractables and protein binding, and biosafe. The two layers of membrane have retentions of 0.1um for microplasma, 0.2um for bacteria removal, 0.45um for most general applications, and 1um for difficult and viscous solutions.
The filters feature a vent to evacuate any air for the fastest filtration, radiation sterilization to ensure no ETO residue contamination, and positive pressure filtration to eliminate protein denaturation.
The effective filtration areas are: 550cm2 for Polycap 36 filters, 1100cm2 for Polycap 75 filters, and 2200cm2 for Polycap 150 filters.

This is only for Whatman, Model 6717-9504. It may differ from the image shown in color, features, may be an accessory, etc. Please refer to the model number or contact us if you have any questions.