Lab Unlimited provides you with a range of ND18 Screw Top and ND20 Crimp Top Headspace Vials, available from 5 to 50ml, in clear or amber glass. These headspace vials are ideal for work with autosamplers and other instruments. Either with flat or rounded bottoms, these vials are compatible with a wide range of manufacturers, such as Varian, PerkinElmer, Metrohm, DANI, Aijiren and CTC, and offer a cost effective alternative to the original manufacturer products.