We have used the nitric acid vapor test (ASTM B-735-89) for several 
     years.  It it is very simple to perform and has served us well.
     
     Michael Holan
     Radian International
     Electronics Div.
     
     [log in to unmask]


______________________________ Reply Separator _________________________________
Subject: FAB: Gold Porosity Testing
Author:  [log in to unmask] at INTERNET
Date:    8/23/96 8:29 AM


     
     
We are a printed circuit board manufacturer and have been testing gold 
porosity on contact fingers with the Electrographic Paper test per Bellcore 
TR-NWT-0000078, paragraph 14.2.2.1 for many years. Our supplier for the 
electrographic paper (Dyntronix) is going to discontinue selling the Nioxime 
paper because the manufacturer is not going to make it anymore. Is anyone 
else using this test method? If so, is there another supplier of this paper? 
If not, what method are you using? Bellcore also allows electrographic gel or 
a corrosive gas test (typically nitric vapor). Any info is appreciated.
     
Thanks,
David Arivett
Cuplex Inc.
     
*************************************************************************** 
* TechNet mail list is provided as a service by IPC using SmartList v3.05 * 
*************************************************************************** 
* To unsubscribe from this list at any time, send a message to:           * 
* [log in to unmask] with <subject: unsubscribe> and no text.        * 
***************************************************************************
     

***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To unsubscribe from this list at any time, send a message to:           *
* [log in to unmask] with <subject: unsubscribe> and no text.        *
***************************************************************************