30/7/2020 · 2ml lab vial with screw cap is belong to HPLC autosampler vials. The classification of HPLC autosampler vials is generally done based on the diameter of the vial body, vial height, and thread finish. 9mm Short Tread HPLC Autosampler Vial 8-425 Screw Neck HPLC Autosampler Vial 10-425 Screw Neck HPLC Autosampler Vial 11mm Crimp Top Autosampler Vial 11mm Snap Ring Autosampler Vial