GB/T 8026-2014 is used to determine the drop melting point of petroleum wax and petroleum grease. It is suitable for related petroleum products. The sample is packed in a special drop Melting point meter casing and heated at a specified rate. The temperature when the sample starts to drop the first drop due to heating is the drop melting point. The standard puts forward requirements for the structure and dimensional accuracy of the instrument, and clarifies the sample preparation, such as the sample filling method. Specifies the heating heating rate, observation method and other operation points. Measuring the drop melting point according to this standard can effectively evaluate the thermal performance of petroleum wax and petroleum grease, and provide key mass parameters for their applications in different fields, such as wax product production, grease manufacturing, etc.