ABSTRACT
Measurement of moisture, although simple in principle, is complicated by the fact that all materials adsorb and desorb moisture. Some drying ovens are provided with built-in weight scales and displays that indicate the sample moisture content directly in weight percentage. Moisture in the sample is absorbed by the desiccant and electrolyzed by means of a voltage-regulated power supply connected to the electrodes. The moisture content of the sample is thus amplified by the desiccant because the saturation level of the desiccant is very much higher than that of the sample. Water vapor pressure of a gas sample uniquely determines the dew-point temperature and moisture content of the sample. Liquid sample is continuously metered into the top of the column where it descends as a thin film. In the case of certain liquid samples, the moisture content can be measured through the application of Henry's law.
