I would use the recommended operational guidelines of the chemical
supplier to start and then validate any differences noted with the
supplier.  The rinse cycle is of particular importance to reduce the
yellowing after TC.

Jeffrey Bush
Director, Quality Assurance and Technical Support

VERMONT CIRCUITS INCORPORATED
  76 Technology Drive - POB 1890
    Brattleboro, Vermont 05302
      Voice: 802.257.4571.21 Fax: 802.257.0011
           http://www.vtcircuits.com
 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kaye Clayo
Sent: Wednesday, August 10, 2005 11:26 AM
To: [log in to unmask]
Subject: [TN] Auditing Immersion Silver processes

Does anyone have any advice on how to audit pc board
manufacturers immersion silver processes or even
auditing different IAg brands?

Would it be by trial and error?  Or is there something
specific to look for?

Thanks in advance.

Kaye Clayo
Sr. P. C. Layout Designer
Keithley Instruments, Inc.
Solon, Ohio

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