METHOD FOR DETERMINING AMOUNT OF SURFACE-ACTIVE AGENTS, DESORBED FROM SURFACE OF PHASES DIVISION OF LIQUID-LIQUID IN HERBICIDAL DISPERSED SYSTEMS Russian patent published in 2010 - IPC A01N33/00 G01N33/26 A01N25/30 A01N25/32 A01P13/00 

FIELD: agriculture.

SUBSTANCE: emulsion is diluted with water at least in five stages, at that reducing the concentration of surface-active agent in two times after each dilution. The interfacial tension is determined. Creation of the curve of surface tension at the liquid-liquid interface of the surface-active agent concentration is carried out. Emulsion is held at each stage to its full coagulation. The repeated definition of interfacial tension and the definition of the desired amount of surface-active agent on the shift of the isotherm on the horizontal axis is conducted.

EFFECT: invention enables to optimise the content of surface-active agent in formulations of herbicidal preparations.

9 ex, 3 tbl