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 are
the short determination times.
This monograph first describes the basics of Karl Fischer
titration. It covers not only the KF reagents, chemical
reactions, volumetric and coulometric titration as well
as the different detection methods, but also deals with
aspects such as interfering side reactions and sample
preparation techniques.
The second part of the monograph contains detailed
working instructions for the determination of water in
different
samples and covers more than 900 substances. The spectrum
ranges from raw materials through cosmetics, pharmaceuticals,
foodstuffs and plastics up to gaseous samples.
Order your free copy now from
your local Metrohm distributor
or online.
Metrohm Monograph No. 8.026.5003 (English) or 8.026.5001
(German)
Table of Content
1. Introduction
2. Karl Fischer Reagents
3. Chemical reactions
4. Volumetry and coulometry
5. Detection methods (EP)
6. Karl Fischer Instruments
7. Side reactions
8. Sample Preparation techniques for Karl Fischer
9. Water determination in raw materials / basic chemicals
10. Water determination in cosmetrics and drugs
11. Water determination in foodstuffs and semi-luxuries
12. Water determination in biological
samples
13.
Water determination in petrochemical products
14. Water determination in plastics
15. Water determination in paints, lacquers, solvents
16. Water determination in gaseous samples
17. Water determination in special samples
Appendix
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