FIELD: chemistry.
SUBSTANCE: method consists in using a cleaning solution containing wt %: tartaric acid 1.5, syntanol DS-10 0.2, ethylene glycol 2.5, sodium components 9.0, distilled water up to 100.0. As the sodium components, disodium salt of ethylenediamine succinic acid of 5.0 wt % and sodium hydroxide of 4.0 wt %.
EFFECT: it is allowed to clean items made of noble metals in a gentle way, with maximum preservation of the surface structure and the use of more environmentally friendly components.
2 ex
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