Whatman Solvent IFD In-Line Filter/Degasser (IFD) Cytiva. membrane and housing makes Solvent IFD suitable to filter and degas these solvents. In-line filter design The Solvent IFD’s all-polypropylene housing is sealed by a security ring. The filter includes fittings to accommodate 1/16”–1/8” tubing and an air vent on the inlet with