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Testing iron content in nitric/hydrofluoric acid

Q. I was wondering if anyone knew the process by which the iron-content of nitric and/or hydrofluoric acid is actually monitored. In other words, is there a step-by-step process of the actual testing methods to discern the content? Is there a pertinent web-page or journal?

Paul Stone
- Kingsville, Ontario, Canada

A. Langford and Parker, [on AbeBooks or eBay or Amazon] , a standard text for analysis of electroplating solutions, says that it is unlikely that the metals be required to be analyzed in this kind of dip. Are you having trouble with the solution?

Tom Pullizzi
Falls Township, Pennsylvania

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