Product integrity verification apparatus

摘要

A method and apparatus for verifying the composition of a moving product employs a source of near infra-red radiation for illuminating the product. Means for receiving data relating to the location of the product and using said data to receive radiation from the source reflected from the located product and a spectrometer for receiving the radiation from the radiation receiving means and providing an output corresponding to the intensity of the received radiation at a number of different wavelengths are provided. Also provided is means for determining whether or not the product is within predetermined integrity criteria on the basis of the spectrometer output.