The Snap Top HPLC Vials for SHIMADZU Snap Cap vials Wide-mouth vials are easy to fill and provide a larger target area for the autosampler needle. Suitable for most autosamplers, it can hold 12x32mm sample bottle format, high-quality 33 expanded borosilicate transparent glass type 1 (Type A) or 51A amber glass uniformly and flat, and it can also have a label area.