This product is a polyethersulfone (PES) microporous membrane developed by Shanghai Xingya, designed for precise microfiltration in laboratory and research settings. Available in a range of diameters from 13 mm to 90 mm and pore sizes of 0.22 μm, 0.45 μm, and 0.8 μm, it accommodates diverse filtration needs such as sterilization, particle removal, and sample preparation. The PES material offers low protein binding and high flow rates, making it suitable for biological, pharmaceutical, and analytical applications. Each membrane is supplied in standardized packaging quantities per box, ensuring consistency for routine use. Its technical versatility supports common workflows including HPLC sample filtration and microbiological testing.