该方法用于确定与碳氢化合物溶剂或碳氢化合物溶剂混合物一起使用的辅助溶剂（共溶剂）是否与水充分不混溶。

This method is employed to determine whether an auxiliary solvent (co-solvent) used with a hydrocarbon solvent or a blend of hydrocarbon solvents is sufficiently immiscible with water.