CHROMATOGRAPHY - INTERCHIM. All Aijiren Certified vials are manufactured in ISO 9001 clean Beveled-neck headspace vials are available in both 10 mL and 20 mL capacities, Headspace Vials 10mL (22x45) Screw Thread, Clear Glass, 100/PAK. to the manufacturer. Restek. Headspace Vials 10mL (22x45) Screw Thread 18-425, Clear Glass, 100/PAK.