THE DVS Intrinsic is an economical research grade water sorption instrument. The compact unit provides high quality isotherms with minimal operator training.
Water sorption behaviour is accurately determined on very small samples (1-20 mg) thus providing savings in the time required to reach water sorption equilibrium.
The system can perform isoactivity measurements in which materials are kept under constant RH conditions while linearly or stepwise varying the temperature.
Traditionally, the water sorption properties of solid materials have been evaluated by storing samples in sealed jars containing saturated salt solutions and then periodically weighing these until equilibrium is reached.
Apart from being highly time and labour intensive, this manual method has several other disadvantages including: larger sample sizes needed (10-100g); inability to measure the kinetics of water sorption/ desorption; risk of mould formation and high weight loss/ gain errors. In contrast, the DVS Intrinsic offers an extremely rapid, highly sensitive and accurate means for the determination of moisture sorption properties of solids.