[ For all ACQUITY UPLC, HPLC, and GC Systems ] Vials are available in three closure types: crimp, snap, and screw cap. HPLC Vial - aijiren. 2mL Clear Glass 12x32mm Flat Base 9-425 Screw Thread Vial. We have complete product ranges of HPLC vials, GC vials, storage vials, syringe filters and Autosampler Vials, Caps & Inserts - Postnova. Accessories.