Water determination (also
called
moisture determination) is, together with the
measurement of the pH value and acid-base titrations, one of the
most frequently performed analyses in laboratories around the world.
This is not really surprising, as the water content directly
influences the quality, processability, shelf life and stability of
a wide range of products.
Various physical and chemical methods are used to determine the
water content. Among these, the Karl Fischer Titration has
established itself as a reference method for general use. It is
characterized by its high specificity and precision and works over a
wide concentration range from ppm up to 100%. An additional
advantage is the short determination time.
For the Karl Fischer titration, two different techniques are
used: the volumetric method where a titrant is added to the analyte
that reacts and the coulometric method where the reactant is
electrically generated.
860KF
Thermoprep
 |
Volumetric KF
841
Titrando
 |
>> More Details at Metrohm
Switzerland
