The BS 684-1-7-1976 (R2002) standard specifies an analytical method for the determination of surface drying time of fats and oils by physical means. This standard is suitable for evaluating the performance of fats and oils to form a drying film on the surface to determine its suitability for practical application and drying speed. Surface drying time is an important indicator affecting the effect of coatings and product mass. This standard provides a uniform test method for relevant industries to help ensure that products meet specific performance requirements, while providing technical support for production and quality control.