FIELD: measuring technique.
SUBSTANCE: method can be used for putting corrections into optical density value of spectrometer. Method is based upon measurement of single or several spectral areas which give spectrum of absorption of described product. Method intends for spectrometers which have IR light source and IR-detector with several optical filters among them. Method doesn't need repeat graduation.
EFFECT: improved precision; higher reliability.
35 cl, 2 dwg
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