Those made by his firm use advanced laser-fluorescence technology: more accurate, simpler, cheaper and more robust, he says, than the gas-chromatography apparatus in common use so far.

This paper describes a capillary column gas chromatography method for quantitative analysis of an 0.8 % solution of transfluthrin repellent.

Scientists had to wait until the development of a technique called gas chromatography/mass spectrometry to identify traces of methoxypyrazines.