2.1. The method established in this standard will be applied to liquid petroleum products such as kerosene, diesel oil, fuel oil, lubricating oils, etc. , to viscous products and suspensions of solid products and in general to products whose flash point in a closed crucible is at least 15 C higher than room temperature. 2.2. The method will not be applied to solvents, liquid waxes and asphalts. 23. The method will also be used to detect contamination in lubricating oils, caused by small quantities of volatile products.