Use these 11 mm clear glass vials with snap caps or aluminum crimp seal closures. Fisherbrand™ 300 μL PolySpring Autosampler Vial Inserts. Fisherbrand™ PolySpring inserts are available in glass or polypropylene and are compatible with 9 mm HPLC and GC autosampler vials. Thermo Scientific™ 9mm Wide Opening Amber Glass Screw Thread Vials.