Fraunhofer Institute for Building Physics
Moisture storage, sorption
Hygrothermics
| Measurement | Water content in % by volume, % by weight |
| Standard | DIN EN ISO 12571 |
| Measurement object | Brick, lime stone, sandstone, concrete, plasters and renders, insulation materials, wooden materials, etc. |
Technical data
| Sample size | Any shape (bigger samples need more time to reach equilibrium) |
| Test conditions at +23 °C | 50 % r.h. 65 % r.h. 80 % r.h. 93 % r.h. 97 % r.h. further conditions possible |
| Test method | Adsorption curve: equlibrium with increasing moisture content Desorption curve: equilibrium with decreasing moisture content |
Special features
| Accredited by DAkkS D-PL-11140-11-02 |
The laboratory has a flexible accreditation according to DIN EN ISO/IEC 17025 Test laboratory moisture, mortar, radiation, emmissions |
| Test reports can be issued |
More information
- Sorption of moisture means the exchange of water vapor between a material and the surrounding air until an equilibrium is reached.
- The sorption isotherm is used to determine the moisture storage function for a material specific WUFI® data set.