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March 2005

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Subject:
From:
"Dehoyos, Ramon" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Dehoyos, Ramon
Date:
Wed, 16 Mar 2005 08:37:32 -0500
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       Accuracy can be increased by processing several of small items at a time to increase the total area.
        Regards,
        Ramon

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Brian Ellis
Sent: Wednesday, March 16, 2005 5:44 AM
To: [log in to unmask]
Subject: Re: [TN] Ionic Contamination Test


Can't answer for the Omega Meter, but for the Contaminometer, our rule 
of thumb was that accuracy started to diminish below ~˝ dm˛/l, mweasured 
on one side of the board. However, it is probable that this instrument 
had a much more sensitive conductivity meter, than the resistivity meter 
of the OmegaMeter, so this figure may not be comparable.

Brian

Rich Olsen wrote:
> Hi All,
> 
>         What are the size limitations (on the small side) for testing ionic
> contamination on an assembled board in an Omega Meter 600? What is an
> acceptable ratio for Square Inches of total surface area versus solution
> volume?
> 
> thanks,
> Rich
> 
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