| Abstract: | The characterisation of emulsions at dilution rates greater than 1:20, currently used in most international specifications for agrochemical emulsifiable concentrate (EC) formulations, is becoming increasingly important. CIPAC MT36.2 is the internationally-accepted test method for determining the bulk stability of emulsions containing 10 ml litre?1 or less of added EC. A new nephelometric version of this test method has been examined which, although not as accurate as the official method, gives more rapid results. An assessment of the new method against the official method at a working concentration of 5 ml litre?1 is reported. Agreement is good, despite the semi-empirical nature of the new method, but only if emulsions are re-emulsifiable at the end of the standing period. The scope of the method is discussed and areas of application indicated. |
