规定了一种方法，其原理是使用特殊仪器在规定条件下蒸发试样，并称量蒸发后的残留物。详细说明程序，并提供有关结果表达和试验报告中包含的数据的信息。

Specifies a method, the principle of which is based on evaporation of a test portion under specified conditions, using special apparatus, and weighing of the residue after evaporation. Details the procedure and provides information on the expression of results and the data to be included in the test report.