µStar units have a bi-directional flow pattern that eliminates the priming and air lock effects of conventional syringe tip filters. These filters have a cellulose acetate membrane in a polyvinyl chloride (PVC) housing. µStar utilises all of the membrane surface area for a working volume up to 100 mL while minimising fluid retention to less than 30 µl with an air purge. Integrity tested with a maximum operating pressure of 100 psi, the µStar, a Class II medical device, is designed for sterilisation and clarification of aqueous solutions including: media additives, serum, antibiotics, biological fluids, radio tracers, and virus suspensions. Sterile, certified non-pyrogenic. Packaging: 50/cs