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248 views
08:01 Feb-21-2001
David Ronson
Temper Etching

Can anyone help me locate an anti-smut additive JAR-3N? It is a product identified in AMS 2649B that when mixed with nitric acid inhibits smutting from occurring on the surface of the part during nitric acid etching. It used to be obtained from a company called Zeta Euro-American Technical Services Ltd, in Leamington Spa, Warickshire, England, but I don't seem to be able to contact the company anymore.


 


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