The Markelov HS 9000 static and dynamic headspace autosampler is designed with standard features such as a dual needle design and horizontal rotary mixing. Sensitivity can be increased up to 100 times as the result of the dual needle’s ability to continually sweep the headspace for concentration on the optional adsorbent trap or at the analytical column. The autosampler also has the ability to switch between static time, fixed loop injection and dynamic headspace injections within the same schedule.