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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Oxalic acid testing of black oxide

I am trying to make photographic standards for the oxalic acid test for our black oxide coating. I am having problems getting the black oxide coating to fail the oxalic acid test. How can I produce a black oxide coating that will fail the oxalic acid test?

Daniel Bemenderfer
Engine manufacturer - Indianapolis, Indiana, USA
2004

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