Microporous filter (microporus filter) aperture 0.2 1 um filter membrane filtration business, herein after referred to as MF. Microporous filter is a new type of filtration equipment, which developed in recent years both at home and abroad. It can filter out particles of or bigger than 0.1 um from liquid, gas, and germs, it has advantages of high filtration precision, fast transition, adsorption, no medium loss, Resistance to acid and alkali corrosion, convenient operation, etc. Is now widely used in pharmaceutical, chemical, electronics, beverages, fruit wine, Biochemical water treatment, etc.