This white paper describes various analytical techniques for water content analysis.
The exact knowledge of moisture/water content is an essential requirement for many materials, including polymers, chemical products (e.g. adhesives, paints, soaps and detergents, dyes, pigments, and inks), pharmaceutical substances and foodstuffs. Even a slight deviation from a defined standard can adversely impact a material's quality and safety.
Moisture/Water Analysis Techniques
Many options are available to determine water content and investigate water–solid interactions. The technique selected depends on the type of sample and property of interest, and may include a moisture analyzer, Karl Fischer titration, thermal analysis and instrumentation for dynamic vapor sorption.
Moisture/Water Determination: Gravimetric Methods vs. Karl Fischer Titration
This white paper explains the difference between the terms “water content”, "moisture content" and "loss on drying" (LOD) and describes two gravimetric techniques (TGA and the halogen moisture analyzer) and Karl Fischer titration (KFT) for determining the moisture/water content in materials. Gravimetric measurements are always LOD methods and yield the total volatile content (including water) of samples. In contrast, KFT or physical methods are specific for water and determine the water content of samples.
The advantages of different techniques for moisture/water content determination, including TGA-sorption for the study of adsorption and desorption behavior.
- Moisture Analyzers
Highly accurate instruments for moisture content determination between 0.01 to 100% for any sample type.
- DSC and TGA
Highly sophisticated instruments that allow for any content determination from RT to 1600 °C.
Upgradable system to study sorption and desorption behavior.
- Dynamic Vapor Sorption (DVS)
Integrated systems for automatic gravimetric determination of water vapor sorption and desorption in multiple samples.
- Karl Fischer Titration
The advantage of this method is its selectivity since Karl Fischer titration is specific for water.
Moisture Tips and Tricks Poster
Get familiar with the most important aspects of moisture analysis from our Tips and Tricks Poster.
Thermal Analysis Application Database
Hundreds of interesting articles on thermal analysis are available in an easily searchable application database.
Selected applications on this topic:
Karl Fischer Titration Guides
From the method development basics to advanced sampling techniques, our set of Karl Fischer guides show you how to get accurate water content results. .
Thermal Analysis Webinars
Stay at the forefront of Thermal Analysis. Our live and on-demand webinars highlight the latest technologies in materials characterization for a range of industry topics, including TGA-sorption.
We offer several web-based thermal analysis webinars on a range topics, including TGA-Sorption.
TGA is a sensitive technique to study decomposition, sorption and desorption characteristics in materials. Find the solution that best fits your needs from our TGA-sorption product offering.
Moisture Method Database
Find the right method for your sample in our moisture method database.
Moisture Method Collections
Check out our industry specific method collections
In our Moisture Guide, you will find the most important information for working and obtaining best results with your moisture analyzer.
Download the sorption datasheet which describes our TGA-sorption solution.