Certified gc headspace vials with round bottom Aijiren headspace vials 20 ml price-Lab Chromatography Supplier aijiren Vial, crimp top, headspace, amber, graduation marks and write-on spot, flat bottom, certified, 20 mL, 23 x 75 mm, 100/pk. Vial size: 22.75 x 75 mm (20 mm cap) – Headspace Vials & CapsUNSPSC Code – 58