Screw Top vials, 12 × 32 mm, limited volume step vial volume 0.25 mL, amber glass vial, step vial, large opening (with glass insert), pkg of 100 ea: 27422: Snap Ring polypropylene autosampler microvial volume 0.5 mL, natural polypropylene vial, O.D. × H × I.D. 12 mm × 32 mm × 6 mm, Snap Ring, pkg of 100 ea: 27423: Snap Ring polypropylene