Big Mouth Crimp Top Vials. Standard Vial; 12x32mm; 11mm Crimp Finish; 2.0mL Volume; 40% larger opening prevents broken needles due to increased target area. Neck finish allows use of patented Poly Crimp Seals™ or standard aluminum seals. Designed to work in Aijiren and other autosamplers. Choose from clear or amber Type I borosilicate glass.