Pore size(μm). High Quality Sample Vials 10ml Amber vial, 20mm Crimp top,Bevelled,for Lab Supp. 200Pcs Lab Autosampler Vial 250uL Glass Inserts Clear With Plastic Spring HPLC. 0.25 mL Lab Micro Vial Inserts, Glass, Conical Base with Polyspring, 200 pcs