The PVDF (hydrophilic) membrane is recommended for aqueous HPLC and UHPLC samples, especially for analysis of pesticides and PPCPs in environmental water samples, and for drugs of abuse in biological samples. Filter inlet can be connected to either a Luer slip or lock syringe. Filter outlet can accommodate a Luer slip needle or other connector. Polypropylene housing, 25mm diameter, 0.45um membrane, 100/pk. Not compatible with DMF, DMSO, MEK, acetone, and caustic solutions >6N.