The ISO 13736 standard specifies a method for the determination of flash points using the Abel closed-cup method. This method is suitable for the determination of the flash point of liquids under standard experimental conditions, that is, the minimum temperature at which liquid vapor can cause instantaneous combustion when it encounters an ignition source after mixing with air. The Abel closed-cup method has high accuracy and Reliability by measuring the flash point of samples without external air flow through a closed cup-shaped container and a precise temperature control system. This standard is widely used in the petroleum, chemical and related industries to evaluate the flammability of liquids to ensure safe operation and transportation.