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
412-858-6184

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