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topic 0325

Determining sulfate in aluminum anodize

A discussion started in 1996.
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I am trying to determine the amount of sulfate contained in the anodic coating when anodizing aluminum in 12% sulfuric acid. Is sulfuric acid consumed in any other way in the anodizing solution?

I can not find any literature that will address this issue.

Thank you

Art Sanders

Surface Treatment & Finishing of Aluminium and Its Alloys
Wernick, Pinner & Sheasby
from Abe Books


See our book section for some basic references on anodizing and/or zip over to Anodizer's Plaza, a web site in Japan, written in English, and available under our WWW links. See my response to your letter #287 for two references.

The Canning Handbook is another, the Garden State Electroplating Manual is another.

tom pullizzi monitor
Tom Pullizzi
Falls Township,

Ed. note: Regrettably we are no longer able to find the Anodizer's Plaza website.

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