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Dynamic Vapour Sorption apparatus DVS Resolution by Surface Measurement Systems

The equipment is dedicated to studies of sorption/desorption processes of water and volatile organic solvents vapours by gravimetric methods under real partial pressure conditions in the flow of carrier gas (nitrogen). It enables measurements on samples from 1 to 1000 mg with the accuracy of 0.1μm. Sorption/desorption isotherms for water in the temperature range of 10-60°C and RH of 0-98%, as well as organic solvents vapour in the range of 10-50°C and p/p0 0-90% can be measured. The equipment may be used for characterisation of crystalline or amorphous substances, polymers, composites as well as multi-phase systems, including pharmaceuticals, foods, building materials, wood and cellulose products.

Applications include studies of:

- drying / dehydration / desolvation processes;

- formation of hydrates / solvates;

- vapour sorption in porous materials;

- hygroscopicity;

- morphology changes / caking / degradation upon humidity and temperature variations.