FIELD: medicine.
SUBSTANCE: method for calcium and magnesium evaluation in herbal crude drug is implemented by extraction of the crude drug in 8-12% hydrochloric acid in the relation of the crude drug to the extractant 1:9-11 that is followed by complexometric titration with the use of indicators: for total calcium and magnesium - eriochrome black T; for calcium - murexide or chromium dark blue; for magnesium - pyrocatechin violet.
EFFECT: accelerated and simplified analysis.
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