Oct 29, 2021 · hydrophilic ptfe 0.22 micron filter Sigma Aldrich-Voa Vial Millex-Lg, 0,20 µm, ptfe hydrophile, 13 mm, certifié. Points forts : This 13 mm syringe filter with a Hydrophilic PTFE membrane, for non-sterile filtration, has a 0.2 µm pore size used in clarification of aqueous & mild organic solutions for ion chromatography.