Autosampler Vials and Caps for HPLC, LC-MS, GC, and GC-MS Thermo Scientific vials and closures are available in a wide range of options to fit every HPLC, GC, and MS instrument — as well as your application and budget. Thermo Scientific Autosampler Compatibility Chart (PDF, 192Kb) Shop Autosampler Vials Get Started with These Vial and Cap Options