Headspace (static) is a sampling technique that involves the determination of volatile compounds found in solid/liquid samples. This is done through heating the sample and subsequently analyzing its vapour phase. It is commonly combined with gas chromatography as an injection technique. It is an effective method for obtaining clean analytes from dirty samples.

The HP/Agilent 7694 (G1289A/1290A) came with two flow path options, the stainless and silico steel flow paths. It is used extensively for residual solvent testing in industries such as pharmaceutical and cannabis. It is an ideal sample introduction technique for volatile compounds. This headspace comes with an optional 44-sample tray.

The G1888A is standard with silicon steel. The instrument uses this inert sample pathway for greater analysis performance, with less analyte degradation when sampling. It can run 70 samples consecutively at higher temperatures than the 7694.

The Agilent 7697A is an upgrade to the previous models, designed to work with the 7890. It includes an automatic leak check, which improves precision and sensitivity. It also allows hydrogen to be used as a carrier gas.

The Agilent 8697 is the newest module of headspace released by Agilent. The module uses a microchannel-based Electronic Pneumatic Control (EPC) to perform atmospheric compensation, which minimizes carryover and variability. The 8697 also possesses greater systemic integration between the HS and GC modules. The headspaces’ increased diagnostic capabilities allow for quick and easy maintenance.