Crude oil provided in the sample of Zhoushan (density 0.897g/L), long Zhi from Zhoushan island sea water (salinity 28 per thousand), and other reagents are made analytically pure.
Provides oil for crude oil samples in Zhoushan Xingzhong (density 0.897g/L), sea water from Zhoushan Changzhi Island (salinity 28%), other reagents are made of pure analysis.