After considering the existing literature and information on the chemical composition of meat processing odours (RPDA.303), chemical mixtures that had odours of meat rendering plants were formulated and used to demonstrate that an electronic nose responded to such odours. A sensor array device (e-nose) was constructed. Four sensors were chosen from a number of available sensors. In addition a fifth sensor, in a separate housing, was used to detect sulfur compounds. These two devices, used in combination, as a single effective e-nose, were sufficiently sensitive to detect odours sampled at a meat processing works. The sensitivity level for the enose was within the range of detection for these sample odours demonstrated by a panel of expert human odour judges.