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December 2003

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Subject:
From:
"Morse, Carrie" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 17 Dec 2003 17:16:23 -0500
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What's the PH of the solution?

-----Original Message-----
From: Dhawan, Ashok [mailto:[log in to unmask]]
Sent: Wednesday, December 17, 2003 4:12 PM
To: [log in to unmask]
Subject: [TN] Tarnished Surface


Technetters

Anyone who has experienced and resolved tarnishing of Aluminium surface upon
cleaning with DI water + saponifier. The aluminium surface is protected with
conversion coating (clear) which is turning black when exposed to saponifier
solution.



Ashok  Dhawan P.Eng
Manufacturing Engineer
Solectron
Snailmail:1455 Mountain Avenue
Winnipeg MB R2X 2Y9 CANADA
*       E-mail:         [log in to unmask]
*       Phone:  (204) 631-7208
*       Fax:    (204) 631-7294
*       I-net:  <http://www.solectron.com>
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