The standard "SH/T 0318-1992 (2004) Technical Conditions for Open Flash Point Testers" specifies the technical requirements, design standards and performance specifications of open flash point testers. The standard is applicable to the determination of open flash points in petroleum products and chemicals, and clarifies the structural design, functional requirements, working principle and operating procedures of open flash point testers. The standard also details the accuracy, inspection methods, installation requirements and equipment maintenance and calibration methods of the instrument, aiming to ensure the accuracy and reliability of open flash point testers during use. The implementation of this standard helps to improve the scientificity and standardization of flash point determination, and is widely used in laboratories and quality control work in petroleum, chemical and other fields.