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Etchant #027, 32oz (E407-027-32-00) - ASTM E-407 Etchants by Metallurgical Supplies
SOLUTION ETCHANT #027
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
1 g KOH
20 mL H2O2 (3 %)
50 mL NH4OH
30 mL Water
Dissolve KOH in Water, then slowly add NH4OH to solution.
Add 3 % H2O2 last.
Use fresh—immerse few seconds to a minute.
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