This product, the polyvinylidene fluoride (PVDF) microporous membrane from Shanghai Xinya, is developed as a hydrophobic filtration membrane suited for organic solvent and air filtration applications. With a 0.45 μm pore size and 50 mm diameter, it meets standard chromatographic requirements by effectively removing particulates from mobile phases and samples, thereby protecting chromatography columns, pump lines, and injection valves from contamination. Beyond chromatography, its properties make it relevant for gravimetric analysis, trace analysis, colloid separation, and sterile experiment workflows. The membrane is supplied in boxes of 50 sheets, offering consistent quality for routine laboratory filtration tasks in experimental materials and general consumables.