DEVICE FOR OSMOTIC PRESSURE MEASUREMENT AND MEASUREMENT METHOD USING IT

摘要

The osmotic pressure measurement device comprises a hollow shell in which a chamber (10) is machined, which contains a solution which osmotic pressure has to be measured. The device also houses a solvent chamber (12). A semipermeable membrane (20) separates the chambers (10, 12). The device presents elements useful to increase the pressure in the solution chamber (10) and devices useful to measure the pressure in the solution chamber (10). The measurement process is divided in two parts: a) set the solution chamber (10) pressure at a specific value; b) let the pressure value in the chamber (10) to evolve naturally toward the actual osmotic pressure equilibrium value, nullifying at the same time the solvent flow between the chambers (10, 12).