2.1.5-2ml, Match brand: Aijiren, Waters, Merck - Hitach, Shimadzu, Thermo Fisher etc. 3.Used in pharmaceutical industry, liquid medicine. 4.Easier to fill and a larger target area for the autosampler needle acceptable. Hot Tags: 2ml crimp top vial, 2ml vial rack, aluminum crimp seal, China, manufacturers, suppliers, factory, wholesale, cheap.