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October 2005

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Subject:
From:
Franklin Asbell <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Franklin Asbell <[log in to unmask]>
Date:
Wed, 26 Oct 2005 09:56:02 -0500
Content-Type:
text/plain
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text/plain (65 lines)
That's probably true and MIL-PRF-55110F1 has a nice table for this that
includes;

                                ug/sq in                ug/sq cm
OmegaMeter                      14.00                   2.20
Ionograph                       20.00                   3.10
Zero Ion                        37.00                   5.8
ICOM 5000                       22.00                   3.4

Keep in mind, if your system heats the solution the number would be adjusted
for that (refer to your owners manual I suppose)

Franklin


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Macko, Joe @ IEC
Sent: Wednesday, October 26, 2005 9:28 AM
To: [log in to unmask]
Subject: [TN] Omegameter to IPC-TM-650, Method 2.3.25 cross reference

Fellow techs,



Good morning.

We have an Omegameter 600SMD that is used to check boards for ionic
contaminates.  The ionic residue limit within J-STD-001C, para. 8.3.6 is 10
ug/sq. NaCl.  Some personnel believe that this number should be adjusted
based on the actual instrument used (e.g., an Omegameter).  Would someone be
so kind as to comment on this subject and what the correct limit is for an
Omegameter type of instrument.



Thanks

joe


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