Thermometric Titration with the 859 Titrotherm
Thermometric titration is a very versatile determination
method and an ideal complement to potentiometric titration.
In principle it is suitable for any reaction that produces
a sufficiently large temperature change in the sample solution.
It is particularly suitable for applications
- for which no suitable potentiometric sensor is available,
- for which no suitable reference electrode is available,
- in which the sample affects the indicator electrode or
destroys it,
- for which no solvent is available that is suitable for
potentiometry.
The
859 Titrotherm combines innovative sensor technology with
Metrohm's titration know-how. The temperature sensor based
on semiconductor technology (thermistor),
has a short response time of 0.3 s and a high resolution of
10-5 K. This makes the Thermoprobe the ideal
sensor for thermometric titration, as it can follow
any change in temperature quickly and accurately.
Metrohm's Dosino technology has defined a new standard for
volumetric titration. The Dosing Unit with its drive motor
is mounted on the reagent bottle and thus guarantees maximum
precision with minimum space requirements.
The clearly laid out Titrotherm software allows adaptation
of the screen view to the particular method parameters and
thus provides rapid access to important commands or parameters.
The endpoints are determined by calculating the first and
second derivatives of the titration curve; by means of additional
optimization parameters, the reproducibility can be improved
even further.
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