Syringe Filter Non Steril, 0.22 um100 pcs, CA/nylon/PTFE, aijiren. Ad. Syringe Filter Non Steril, PTFE Hydrophilic Syringe Filter 0.45um 25mm. Syringe filter-Aijiren Vials for HPLC/GC. Aijiren has focused on producing Syringe filter since 2009 and became a Syringe Filter Nylon for Laboratory 13mm PTFE Syringe Filter for HPLC.