Standard 2 mL screw top vial-cap kits; including SureStop vials with AVCS caps, 4, 8, 12, 16, 20, or 40 mL vial-cap kits, 20 mL screw top vials with 24 mm caps. Hplc Sample Vials - Aijiren. These wide mouth autosampler vials are appropriate for many chromatography applications, including:HPLC,GC,IC,UHPLC,Sample storage.Snap vials have more glass in