This standard provides a method for the determination of pigment alkali resistance, which aims to evaluate the Stability of pigment in alkaline environment. The alkali resistance of pigment refers to the fact that pigment is not easily dissolved in alkaline solution, so as to avoid the staining phenomenon of the solution. The standard details the required sodiumhydrate solution, Balance, Electric Oscillator and other materials and instruments, and describes the test steps. This method provides evaluation criteria for the use of pigment in alkaline conditions, which helps to ensure the performance and Stability of pigment.