ReZist InLine Filter, 50 mm, PTFE, 0.2 µm ReZist inline filter is a lightweight unit particularly suitable for protective vents and for inline filtration and isolation applications. Solventresistant membrane. Chemicalresistant housing. Hydrophobic PTFE membrane. Autoclavable (multiple times). Integritytestable (bubble point or water breakthrough pressure in situ methods). Biosafe. Lightweight: Avoids the collapsing of tubing that can be caused by heavy filter devices. This device features a PTFE membrane, which is ideal for chemically aggressive solutions, reagents, and organic solvents. The 1 µm device features a polypropylene prefilter for use with heavily contaminated samples.