Autosampler Vial, Clear Chromatography Lab Vial, HPLC LC GC 1.5 instrumentation 300ul clear glass 9mm screw top fused insert vial, 12x32mm with label. VWR® AUTOSAMPLER VIALS, INSERTS, AND CLOSURES Lot-tested including HPLC and GC analysis for. 9 critical parameters 2mL, 12x32mm, 8mm Standard Opening Screw Thread Vials and Inserts.