20ml headspace bottles, which are often used in Shimadzu, Spectral Physics, Varian, and other autosamplers. 9mm 2ml Short Tread HPLC Autosampler Vial 9mm Short Thread Caps with Septa 8-425 2ml Screw Neck HPLC Autosampler Vial Screw Caps with Septa for 8-425 Screw Neck Vial 10-425 Screw Neck 2ml HPLC Autosampler Vial 10-425 Screw Caps with Septa 11mm