There's a Thermo Scientific vial & closure for every HPLC, GC, MS instrument, application, In addition, kits are either LC/GC Certified or MS Certified. Sample Vials and Accessories - Waters Corporation [ For all ACQUITY UPLC, HPLC, and GC Systems ] All Waters Certified Vials are tested by LC or LC/MS to HPLC. This vial delivers maximum sample.