a homogeneous appearance 说谁呢(分析)? 回楼上,样品是黑的哦。放在瓶子里是看不出来是否搅拌均匀的,黑乎乎的。 蘸取出来是为了看是否均匀,因为渣油里面可能会有容易沉淀的组分,正如你找的资料里面的说明: this test method covers the determination of total sediment up to 0.40 % m/m for distillate fuel oils containing residual components and to 0.50 % m/m in residual fuel oils having a maximum viscosity of 55 cst (mm2/s) at 100°c. 这些不蘸取出来是不好判断的。查看更多