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The role of the forensic laboratory in law enforcement is briefly discussed. Not only is it necessary to identify the major constituent of an exhibit, but in many cases valuable intelligence is gained by identifying whatever else is present. This includes other drugs, excipieuts, metals, etc. Therefore, identification of an extremely wide range of chemicals is required. The use of NMR and mass spectral data in the positive identification of such substances is invaluable. Specific examples of these data in identification are discussed.

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