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SOLUTION ETCHANT #225
Etchant Solution following the standards of ASTM E-407. With the solution, a COA is provided and the COA's of all the chemicals used to make the solution.
ALL SOLUTIONS ARE MADE THE SAME DAY OF SHIPPING
4 g NaOH
100 mL saturated aqueous KMnO4
Immerse 10 s at 20°C (68°F).
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