transparent headspace vials 20 ml with cap Perkin Elmer | AijirenHeadspace Crimp Top Vials. Vial, crimp top, headspace, clear, graduation marks and write-on spot, flat bottom, certified, 20 mL, 23 x 75 mm, 100/pk. Vial size: 1.5mL 11mm Snap Ring Autosampler Vial ND11