GB/T 11175-2021 applies to synthetic resin emulsions such as polyvinyl acetate and polyacrylate, standardizing the general test principles and detection methods for various properties. The standard covers key parameters including non-volatile content, viscosity, pH value, particle size, and freeze-thaw stability, specifying requirements for sample handling, environmental conditions, and result evaluation. Testing requires instruments such as electronic density meters, rotational viscometers, pH meters, particle size analyzers, and low-temperature chambers, along with auxiliary equipment like electronic balances and constant-temperature devices. Some items incorporate more precise detection methods, employing operations such as weighing, measurement, and cyclic testing to comprehensively characterize emulsion properties, providing a standardized basis for product quality control and application.