HPLC. 9mm Screw Thread Vials Septas & Caps · 11mm Crimp Neck Vials Septas & Caps G.C., 20mm(Headspace) Vials. Crimper, Crimper. Vials, LC, 1.5mL, 12x32 mm, MT-IT Low Volume Vial Set, Clear 100/pk. Includes caps with pre-inserted Teflon/silicone septa. Vials have a wide-mouth opening for ease of filling, especially with automatic pipettors.