Shanghai Xingya Microporous Membrane Mixed Fiber is developed for laboratory filtration applications, offering a range of aqueous and organic solvent-compatible membranes. These cellulose-based mixed fiber filters are available in 47 mm and 50 mm diameters with pore sizes of 0.22 µm, 0.45 µm, and 5 µm, supplied in boxes of 50 sheets. The 0.22 µm variants support sterile filtration, while 0.45 µm membranes are suited for particle removal, and 5 µm options serve as pre-filters. Designed as general consumables for experimental materials, these membranes provide consistent pore structure and chemical resistance appropriate for routine microfiltration tasks in research and quality control settings, such as sample preparation, solvent clarification, and microbiological analysis.