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[Non-destructive quality control of tablets by photoacoustic infrared spectrometry. Analysis in primary packaging].

We have studied the feasibility of the photoacoustic detection in Fourier transform infrared spectrometry for the quality control of drug tablets. Beyond the non destructive character of the method, the main advantage which has been established is the precocity of impurity detection on the tablet outside. The direct recording of spectra through PVC lead to interesting results for study of tablets under blister.