Description
When used as a micro-etchant, swab or immerse for between 5–15 s.
When used as a macro-etchant immerse the sample for between 5 to 15 min in the solution heated to 140 to 160°F (60 to 70°C). Rinse in water, and remove smut in strong Nitric Acid (HNO3) solution.
Rinse and repeat etching if necessary.
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