Autosampler Vials, Inserts, and Closures Chromatography Autosampler Vial Caps Only Chromatography Autosampler Vial Caps Only Closures/caps designed for use with chromatography autosampler vials; available in various materials and formats. Filter By category Vials Autosampler Vials, Inserts, and Closures Chromatography Autosampler Vial Caps Only