Abstract
To measure the osmotic pressure of a solution, which is indispensable for analysis of reverse osmosis and ultrafiltration data, a new type of membrane osmometer system was developed by improving conventional methods. The volume of the sample solution required was reduced to only 300 ml, and the time required for measurement was less than 30 min. Accuracy of the measurement was theoretically justified on the basis of the membrane transport equation and the concentration polarization phenomenon.
Osmotic pressure values of sucrose and glucose solutions obtained using the membrane osmometer system were in good agreement with data in the literature.
