Autosampler Vials, Caps, and Closures. Thermo Scientific™ 9mm Clear Glass Screw Thread Vials. Nearly eliminate septa push-through and improve sealing with vials built with the innovative Advanced Vial Closure System (AVCS). Pricing and Availability. Thermo Scientific™ 9mm Non-Assembled Clear Screw Thread Wide Opening Autosampler Vial Kits.