Method for control of concentration of surface-active substances in liquid solutions

摘要

Method for control of concentration of surface-active substances in liquid solutions at which after coming to maximal tension in meniscus one terminates air supply to capillary, pressure in meniscus is decreased to value this pressure takes before having come to maximal value, this procedure is repeated many times with registration of change of maximal pressure in time till coming to constant value of maximal pressure in meniscus, value of concentration in the solution is determined through comparison of change of surface tension of solution under investigation in time to obtained before changes in time for surface tension of calibration solutions of the surface-active solutions with different concentrations.