2ml hplc autosampler vials with screw caps for HPLC Thermo Fisher. 2ml hplc vials with screw caps for Waters HPLC Alibaba Crimp/Snap Vials, Caps and Kits | Thermo Fisher Scientific – US. Thermo Scientific crimp top vials for HPLC and GC are available in 8mm, 11mm, or 13mm crimp border diameter in clear and amber glass and plastic.