NMR undoubtedly has the potential to be used successfully for on line process control and quality assurance applications in a number of environments and for various industries including food. The basic low resolution NMR techniques which can be used to determine, for example, moisture content are well established. The means of building large and unusually shaped magnets and coils for use in hostile environments has been demonstrated. The cost, although expensive, need not be exorbitant and pay back can be in just a few years. This potential has been recognised many times before. It remains to be seen if at last some of the prejudices which have prevented NMR being widely taken up will at last be overcome.

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