PTFE CR Solvent Filter, 47 mm, 0.45 µm, 100/pk. To easily conduct the extraction and filtration of strong solvents and organics, rely on the PTFE CR Syringe Filter. The lab equipment is accredited for HPLC to ensure low extractables and provides high-quality filtration for analytical samples. This is a hydrophobic polytetrafluoroethylene (PTFE