We distribute the HTA line of robotic autosamplers - you can see the descriptions, models, etc. at our website -
http://www.overbrookscientific.com, or call in 617-364-7683. There are data sheets for many of them including:
The HT200H Headspace Autosampler meeds the needs of static headspace injection for GC analysi at an economical price, and operates with all major GC systems including Agilent, Shimadzu, Varian, and others.
If you're doing SPME, there's the HT280T. There's also application specific informaiton in the Knowledge Center, also at the website.