FIELD: radio electronic and instrumentation engineering; manufacture of printed-circuit boards. SUBSTANCE: compound 1 or 2 for clarifying tin-lead coating of current-conducting circuit has the following composition, g/1: main reagent (ures) - 50-90; hydrochloric acid - 25-30; catholyte with pH value of at least 10.5 - the rest, or ures - 50-90; hydrochloric acid - 17-20; anolyte with pH value of maximum 2.4 - the rest. EFFECT: improved clarifying ability.
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