This product, from Shanghai Xinya, is a series of PVDF microporous membranes offered in both hydrophilic and hydrophobic variants. Available with pore sizes ranging from 0.15 µm to 0.8 µm and a standard 50 mm diameter, these membranes are designed for precise microfiltration and sample preparation tasks in laboratory and research settings. The material properties of PVDF provide good chemical resistance and thermal stability, making these membranes suitable for filtering aqueous solutions, organic solvents, or air/gas samples depending on the surface wettability selected. Common applications include sterile filtration, particle removal, and environmental monitoring, where consistent pore structure and reliable performance are required. Each pack contains 50 sheets, supporting routine workflows in analytical chemistry, biology, and materials science.