GB/T 27847-2011 stipulates that the Abel-Binsky closed cup method is used to determine the flash point of petroleum products. This standard is applicable to a variety of petroleum products. The principle is that the sample is uniformly heated in a special closed cup, and an ignition source is introduced at specified intervals to determine the flash point at the temperature where the flash fire occurs for the first time. The standard puts forward clear requirements on the structure and accuracy of the Abel-Binsky closed cup measuring instrument, detailing the preparation steps of petroleum product samples, temperature equilibrate, etc., and also standardizes the heating rate, ignition timing and other key operation points, which can accurately determine the flash point of petroleum products, providing an important basis for the safe storage, transportation and use of petroleum products.