The most common vial sizes for liquid chromatography vials are 12 x 32 mm as well as 15 x 45 mm. Depending on the resource, 12 x 32 mm vials will also be described as 1.5 mL, 1.8 mL or 2.0 mL vials. Crimp top vials are the product of choice for many routine high performance liquid chromatography (HPLC) and gas chromatography (GC) applications.