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Introduction and hardware Chapter 1
MPT-2 & Degasser Page 1-3
MPT-2 Multi-purpose titrator / Vacuum
degasser - Overview
What does the Titrator do?
The principal function of the Titrator is to allow zeta potential, size or intensity
measurements to be made, while adding quantities of additives (titrants) to the
sample when performing a particular titration type, i.e. pH, Dilution or Additive.
This allows the effect of adding these titrants on the measurement to be investi-
gated.
ill 8735
The heart of the titrator  is the dispenser unit. The sample to be measured is
placed in a disposable sample container. The dispenser unit has an internal pump
that circulates the sample through the cell in the optical unit. (A size flow cell will
be required if size measurements are to be made).
The dispenser unit has three titrant containers that can be filled with either an acid,
base or some other additive. The titrants used can be different concentrations of the
same acid or base. This will improve the accuracy of obtaining a target pH or con-
centration and limit the quantity of titrant used.
The syringe system can deliver a precise quantity of titrant from one of the titrant
containers into the sample container.
Additionally a Vacuum degasser  , placed between the titrant containers and the
sample container, removes dissolved gasses from the titrants used.
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MAN0318-4.0 - MPT-2 Autotitrator-Degasser.book Page 3 Tuesday, September 4, 2012 12:15 PM