Vials are made to the original OEM specification for Aijiren, CTC/Leap, Perkin Elmer & Varian but may work in other instruments. Choose from clear or amber, flat or round bottom, vials in 5, 6, 9, 10, 12, 20 or 27ml sizes. SPME vials are also available. Click HERE for Headspace Caps Ordering Page.