GVS Gravi-Seal PS Analytical Filter Holder (complete unit): 47 mm 1/PK 1213865

Laminated PTFE filter sheets for laboratory and life‑science applications. The membrane is polytetrafluoroethylene (PTFE) laminated to a polypropylene support to provide improved durability and easy handling. Designed to capture particulates while allowing air or gases to pass, typical uses include venting, phase separations, aerosol sampling and filtration of aggressive chemical solutions when prewetted appropriately.

Key Features:

• Membrane material: PTFE (polytetrafluoroethylene) laminated to polypropylene support
• Pore size: 0.45 µm
• Geometry / Size: Sheet, 200 x 200 mm (20 x 20 cm)
• Packaging: 5 per pack
• Hydrophobic: Yes; inherently water‑resistant
• Autoclavable: Yes, up to 130°C

Advantages:

• High chemical compatibility with strong acids and aggressive solvents, suitable for harsh‑chemistry filtration
• Inherent hydrophobicity enables effective venting, phase separation and aerosol sampling
• Lamination to polypropylene improves durability and handling compared with unsupported membranes
• Can be used for aqueous filtration after prewetting with methanol and is autoclavable for sterile workflows