The AS 2000 autosampler has been discontinued. For information on other autosampling options for gas chromatography, please check out current autosampling options. The TriPlus autosampler offers versatile liquid, headspace, or SPME injections. The AI/AS 3000 Series of autosamplers provides routine liquid injections ideal for gas chromatography. To upgrade an existing AS 2000 autosampler, please contact your Thermo Scientific sales representative.