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What type of chemical can be used to check an aluminum surface for clear Iridite coating. (I believe it was a chemical that would turn blue when applied).
Sierra Research - Buffalo, New York, USA
Please see post #8243. In that post I gave the chemical makeup and simplified procedure of how I test for a clear Alodine coating. Although Iridite is different, as the test is essentially for Cr+6 it should work for you as well.
Cygnus Inc. - Ponderay, Idaho, USA
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