FIELD: chemistry.
SUBSTANCE: invention relates to methods of determining size of particles, in particular, to methods of determining invisible impurities in coloured medicinal preparations for parenteral application. Invention consists in application of method electroreceptor zones for determining invisible impurities in coloured medicinal preparations for parenteral application.
EFFECT: method increases accuracy of determining amount and sizes of invisible impurities in coloured medicinal preparations and reducing duration of analysis.
1 cl, 2 dwg, 1 tbl, 4 ex
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