FIELD: measuring technique.
SUBSTANCE: method comprises producing reference specimens with a standard diameter of the pores and having the same chemical nature as the specimen to be analyzed, recording IR-spectra of transmission of the reference specimens, determining the value of the wavenumber for which the IR-radiation transmission is 50% (point of inflection), and obtaining reference histograms. The sizes of pores are judged by the position of the points of inflection in the transmission spectra.
EFFECT: enhanced precision.
6 dwg
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