FIELD: biotechnology.
SUBSTANCE: beet roots are used as the feedstock. They are crushed and infused in 90% ethanol. 10 ml of aqueous solution of potassium alums and 10 drops of acetic acid are added to 30 ml of the resulting solution of Burgundy colour.
EFFECT: invention allows for expanding groups of histological vegetable dyes, simplifying methods of dye production using non-toxic ingredients.
1 dwg, 1 ex
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