2ml Screw Thread HPLC Glass Vial--aijiren Vials for HPLC/GC 202 - 03 - 23 aijiren Clear 8-425 HPLC Sample Vial, Clear Type Class A, Amber 8-425 HPLC Sample Vial is manufactured in Type Class B Borosilicate Glass, sample identification, measurement values 0.5, .0 and .5 ml. Consistency between the vial and the true neck 6mm of the standard glass insert is always guaranteed.