Nitric is very aggressive. I wouldn't use it for cleaning copper oxide. You
risk inducing a grainy copper  surface, pitting, etc. etc.

A 10% sulfuric solution has worked great for me for years.

Hope this helps

Franklin D Asbell

-----Original Message-----
From: nishath yasmeen <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Friday, July 23, 1999 2:40 PM
Subject: [TN] Copper oxide removal


>Hello everyone!
>    Is Nitirc acid ( dilute)  a better acid than sulfuric for cleaning
>the oxide on plated copper?
>    Any information provided will be appreciated.
>
>Yasmeen
>
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