Autosampler Vial Inserts. Clear glass or polypropylene inserts for 8mm, 9mm, 11mm or 13mm HPLC and GC autosampler vials are available in a variety of configurations with usable volumes from 125µL to 3,5mL. 8mm Autosampler Inserts » 9mm Autosampler Inserts » 11mm Autosampler Inserts » 13mm Autosampler Inserts »