The standard "ISO 2719-2016 Determination of flash points Pensky-Martens closed cup method" specifies the technical requirements for the determination of the flash point of liquids using the Pensky-Martens closed cup method. This method is suitable for the measurement of the flash point of flammable liquids in a specific environment, especially in the petroleum products, solvents, Coatings and other industries. The flash point of the liquid is determined by recording the temperature at which the liquid begins to produce ignitable gas by heating the sample in a closed container and gradually applying the ignition source. This standard emphasizes the requirements of the test equipment, the operation steps and precautions to ensure the accuracy and conformity of the measurement results. By adopting this method, the combustion performance of liquids can be effectively evaluated, and necessary safety measures can be taken during production, transportation and storage.