10 Pack Syringe Filter Sterile PES Filtration Diameter: 33 mm 10 Pack Syringe Filter Sterile PES Filtration Diameter: 33 mm, Pore Size: 0.22 um and 100 Pack 2ml Autosampler Amber Vials, 9mm Blue ABS Screw Caps & Septa for GC Sample Vials: Amazon.com: Industrial & Scientific 0.45 micro pes mushroom syringe filter Mexico-HPLC Vial Inserts Feature: filter diameter: 3mm, pore size: 0.45um