Aijiren premium 0.45 µm syringe filters. Nylon. Nylon Syringe Filter, AQ™ brand, 0.45µm, 25mm housing. Manufactured with a unique 0.45µm nylon-66 membrane in a 25mm polypropylene housing, these syringe filters are made for laboratories that require consistent, EZFlow® Syringe Filter, CA, 0.45µm, 33mm, Sterile, 100/pack. The sample prep syringe filters are used for clarification and particle removal from samples before instrumental analysis such as HPLC, IC, and GC.