Determining the water content in sparingly soluble substances
- made child’s play with Titrando plus homogenizer
Sample preparation – ready for analysis in no time
at all!
The quality, shelf life and stability of many products depend
to a large extent on their water content, which means that
its determination is very important. We recommend Karl Fischer
titration for determining the water content. In comparison
with other methods, Karl Fischer Titration has proved
to be quick, accurate and reliable.
Unfortunately, some substances dissolve only incompletely
or too slowly in the KF working media. In such cases sample
preparation is crucial for obtaining correct and reproducible
results. However, up to now sample preparation was laborious
and time-consuming.
With the new Titrando/homogenizer combination manual sample
preparation can be dispensed with. The high-frequency
homogenizer from Metrohm is an adapted version of
the Polytron homogenizer made by the Swiss company Kinematica.
This instrument effortlessly homogenizes the sample without
any other actions being required to form a thick paste. The
release of the water contained in the sample can be accelerated
by adding a solubility promoter or by titration at a higher
temperature (normally 50 °C).
Two high-frequency homogenizers with lengths of 115 and 154
mm are available, allowing you to achieve the optimal result
for your application.
No moisture in or out
As the comminution and homogenization process takes place
directly in the sealed titration vessel, any falsification
of the analytical results can be ruled out. No moisture can
penetrate the sealed vessel from the atmosphere, and water
released during the homogenization process cannot escape from
the vessel.
Examples of applications involving sparingly soluble substances
| Meat |
"Determination of Water Content in Meat and Meat
Products by volumetric Karl Fischer Titration" (Read
more at www.analysis-food.com) |
| Candies |
The water content determines both the quality of the
candy as well as the taste experienced when eating it. |
| Pharmaceuticals |
The water content of medicaments influences the release
of the active substance.With the Titrando plus homogenizer,
tablets are dissolved in the KF reagent in a very short
time, regardless of their coating. |
| Dried plant material |
In plant material, such as tobacco, the major part of
the water is also enclosed in cells. The easiest way of
releasing it is with a high-frequency homogenizer. |
Get more product information
Get more application information
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