Nylon, polycarbonate, cellulose acetate, polyvinylidene fluoride (PVDF, Durapore® membrane), and polyethersulfone are common liquid sterilisation filter materials (PES). Protein retention, flow rate, and the presence of leachable materials differ between these filter materials.
Every substance has advantages and disadvantages. A proper filtration method begins with a suitable filtration membrane. Membranes are commonly made from cellulose esters, polycarbonate, and nylon. Sterile Filtration items have excellent filtration capabilities and are typically non-reactive. Sterile filtration is distinguished by its ability to separate 0.2-um elements from liquid. They are used at several stages of the pharmaceutical manufacturing process. Typical liquids include biological specimens, proteinaceous medium, and buffered medium. Purchasing a sterile filter can reduce the need for a separate sterile filtration procedure.
Read More @ http://dailynewsmotion.weebly.com/blog/sterile-filtration-is-used-to-sterile-liquid-reagents
