FIELD: chemical treatment of materials.
SUBSTANCE: composition for removing black deposits resulting from oxidation and fungi colonies contains liquid chlorine (65-75 g/L active Cl), saturated monoatomic alcohol with 2 or 3 carbon atoms (300-250 g/L), and water to 1 L.
EFFECT: achieved restoration of initial color of surface without degradation surface structure.
12 cl, 1 dwg, 4 ex
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