### Moisture Content Determination: Official Methods
Moisture content determination is a fundamental aspect of moisture mapping. Various official methods are used to accurately measure the moisture content of materials, including:
– **Oven Drying:** A sample of the material is heated in an oven at a specific temperature until it reaches a constant weight. The moisture loss is then calculated to determine the moisture content.
– **Karl Fischer Titration:** A sample of the material is dissolved in a solvent and titrated with a Karl Fischer reagent until the moisture content is reached. The endpoint is indicated by a color change.
– **Gravimetric Analysis:** A sample of the material is weighed before and after drying in an oven. The difference in weight is used to calculate the moisture content.
– **Nuclear Magnetic Resonance (NMR):** An NMR spectrometer is used to measure the moisture content of a sample by detecting the hydrogen atoms present.
– **Microwave Drying:** A sample of the material is heated using microwaves, and the moisture loss is monitored until a constant weight is reached.