The GB/T 13173-2021 standard is a regulation on the test methods for surfactant detergents. This standard includes the test methods for the physical properties of various detergents, such as surface tension, PH value, Appearance, solubility, foam performance, etc. These test methods are designed to evaluate the basic performance and applicability of detergents and ensure their effectiveness and safety in different application scenarios. The implementation of the standard helps manufacturers to ensure the mass Stability of products and provide the market with consistent product performance standards, thus promoting the healthy development of the detergent industry and consumer satisfaction.