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Spectrum of Raman noise level was studied on a multichannel spectrometer with LN cooled CCD detector. A mixture of 5 -AMP and NiCl 2 in water was used as a model system containing Raman active molecules (Ni 2+ :5 -AMP 2- macrochelates) in both dissolved and crystalline form. It has been find that the noise spectral dependence corresponds to the superposition of luminescence background spectrum and narrow bands at positions of the main difference between Raman spectra of the two forms.