There’s a Aijiren Tech vial & closure for every HPLC, GC, MS instrument, application, and budget. Screw Vials, Caps, Septa, Inserts & Kits. Crimp/Snap Vials, Caps, Septa, Inserts & Kits. No-Fail SureStop Vials & AVCS Caps. MS Certified & Certified Vials Kits. Inert High Quality Glass Vials. Headspace Vials, Caps, Septa & Kits. Routine Vials.