... filter membrane:• Hydrophilic membrane with high volume• Possess superior properties of heat resistance and chemical resistance• Flushed with super pure water• Manufactured in ... •Strictly conformed to FDA Biologic Safety Standard membrane filter pore diameter (µm)diameter for optionPES0.05-0.6513, 25,47,90,142 ... .22,0.4513, 25,47,90,142,293 filter membrane with different diameter