If you cannot find the vials, cap, septa or other vial accessory thread on the larger opening vial is 10-425. The caps on both Vials for GC and HPLC. National Scientific Total Product Overview - Aurora Borealis Control . B7999-4, CLEAR GLASS VIALS,16ML18-400,21X70,200/PK. B7999-4A, AMBER VIALS,16ML C4010-30A, TARGET CAP TEFLON/RED ...