Nylon Syringe Filters, Advantec, Sterile, 0.20 Micron, 25mm, 100/Pk. Clarification of samples, buffers, and mobile phases for HPLC and GC; Sterilization of lab water and buffers; Compatible Solvent filtration PVDF Syringe Filters, Advantec, 0.45 Micron, 17mm, 50/Pk – Sterlitech. Q: What syringe filters should I use for my HPLC samples?