This standard specifies terms and definitions, quality evaluation index, quality control index and control value, test method, marking, requirements of quality inspection and trading, and technical requirements of quality evaluation and control in the contract of commercial coal trading
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This standard specifies a method for the direct determination of mercury content in chromium ores by solid sampling and direct mercury analysis method.
This standard is applicable to the determination of mercury in chromium ores in the range of 0.001 μg/g to 5.00μg/g.
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