Millex-HN, 0.45 for Samplicity G2 µm, nylon, 33 mm, non-sterile. This 33 mm syringe filter with a Hydrophilic Nylon membrane, for non-sterile filtration on the Samplicity G2 system, has a 0.45 µm pore size used in preparation of aqueous & organic solutions prior to chromatography or other instrument analyses.