The posts on this topic were interesting.
For my continued education/information what does the 'net think of using conductivity checks on
final rinse water as an instant process control parameter?

Mike Fenner

----- Original Message -----
From: Alain Savard <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, February 07, 2000 5:12 PM
Subject: Re: [TN] Saponifier concentration measurement


> Hi Lou,
>
> Titration will usually give you more precise results.
>
> There are several ways to do to use titration:
> - Autotritration with pH/potentiometer is an excellent choice for a tight
>        control, but is rather expensive.
> - Manual titration with a burette and colour indicator is usually more then
>        sufficient.
> - Drop kit system might be appropriate if you need to verify a gross
>        approximation on the spot, this methods can be as the operator level
>        but is prone to error due to complexity in calibrating the size of
> the
>        drops.
>
> Just my 2 cents,
>
> Alain Savard, B.Sc.
> Chemical Process Analyst
> CAE Electronics Ltd.
> e-mail: [log in to unmask]
>
> -----Original Message-----
> From: Lou Hart
> Subject: [TN] Saponifier concentration measurement
>
>
> Technetters, how do you measure saponifier concentration in a board assembly
> cleaning machine?  We've been using a refractometer to measure degrees Brix,
> but this is appears to be a "legacy" method.  I've been hearing titration
> would be the way to do it.  Please comment.  Lou Hart QA manager, Compunetix

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