Chrom Tech Glass Crimp Cap Headspace Vials Crimp Vials ; CTV-2246 – 10 mL, 20 mm Crimp Headspace Vial, 22x46mm, 100/pk. CTV-2246. $35.90 ; CTV-2375 – 20 mL, 20 mm Crimp Headspace Vial, 23x75mm, 100/pk. CTV Chromatography Consumables – HPLC Vial Racks Distributor Capacity: 8,11,13,20,28 & 32mm Alu caps.