ASTM D4206 Sustained Burning of Liquid Mixtures Using the Small Scale Open-Cup Apparatus
Spray lubricants, fuel additives, paints, adhesives and other products often contain a mixture of a flammable liquid with an inflammable one. The flammability of these mixtures helps determine end use properties. For example, fuel additives need the proper flammability to function in internal combustion engines; paints need a low flammability for safety during use. This test determines the flammability of liquid mixtures.
A metal cup is brought to the test temperature, the sample is added and given time to equilibrate. A flame is brought over the cup and held there for the test time. The flame is removed and the sample is observed. If the sample ignites, the length of time the sample continues to burn and the burning characteristics are reported.