The ISO 19396-1:2017 standard specifies a method for laboratory measurement of the pH value of polymer dispersion and coating materials using a pH electrode with a Glass film. The pH value has an important impact on the performance and durability of aqueous products, and this standard provides technical details for accurately determining the pH value of these products. The standard includes requirements and operating procedures for pH measurement using Glass film electrodes, including aspects such as electrode design, use of reference electrodes, temperature compensation, etc. This standard ensures the accuracy and conformity of measurement results and provides important technical support for quality control and Product Research & Development in the Coatings industry.