With a focus on improved sample security and integrity, we offer the innovative Thermo Scientific™ AVCS™ 9mm closures and SureStop™ 9mm screw top vials for consistent productivity on every separation. Browse these products: Autosampler Vials. Autosampler Vials Closure and Septa. Autosampler Vials Inserts. Autosampler Vials Kits.