Polycap TF made with durable, hydrophobic polytetrafluoroethylene (PTFE) membranes in a polypropylene housing, are designed for use with organic solvents and chemically aggressive solutions. Resistant to most solvents, autoclavable, and integrity-testable. Available in 0.05, 0.1, 0.2, 0.45, and 1.0 µm pore sizes.