IS 5785 : Part 3 : 1970 : Methods for performance tests for surface active agents: Part 3 Foaming power

1. Scope

1.1 This standard ( Part III ) prescribes two methods for the measurement of the foaming power of a surface active agent. The methods are applicable to all surface active agents. Method A, known as the Ross-Miles method, shall be the referee method and shall be used in case of any dispute. Method B shall be the alternate method.

1.1.1 Measurement of the foaming power of solutions of readily hydrolysable surface active agents by these methods does not give reliable results, as the hydrolysis products collect in the films of liquid and affect the persistence of the foam.