I have used this test.  It is a great test for gold porosity, as nickel shows up red and copper shows up green.  However, you must apply current to run the test.  I believe there is an IPC test method for it but don't have time to dig through the online TM's.  If not, I may be able to locate it here.  It sure beat using nitric acid.

I think the original procedure I saw came from IBM, about 15-20 or so years ago.

Patty
Patricia J. Goldman
PPG Industries, Inc.
724-274-3417
[log in to unmask]


-----Original Message-----
From: Rudy Sedlak [mailto:[log in to unmask]]
Sent: Wednesday, April 10, 2002 9:25 PM
To: [log in to unmask]
Subject: [TN] Nickel Test


I recall seeing a spot test for Nickel that involved using a solution of
Dimethylglyoxime in dilute Ammonia, + ???? as a spot test for gold porosity
to show presence of Nickel.

Does anyone have the exact details of this test?  Does anyone know if it
works on Electroless Nickel?  (Suspect it may not because EN is so much more
passive.)

Rudy Sedlak
RD Chemical Company

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