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Benzene mixture standard,Standard solution, 1.2ml
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N solution,10000ug/ml, H2O, 50ml
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COD solution,10000ug/ml, H2O, 10ml
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COD solution,10000ug/ml, H2O, 100ml
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Mg solution,10000ug/ml, 2.0 mol/L HNO3, 50ml
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K solution,10000ug/ml, H2O, 50ml
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Bi solution,10000ug/ml, 2.0 mol/L HNO3, 50ml
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Ca solution,10000ug/ml, 2.0 mol/L HNO3, 50ml
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Ca solution,10000ug/ml, 2.0 mol/L HNO3, 100ml
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COD solution,1000ug/ml, H2O, 100ml
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COD solution,1000ug/ml, H2O, 10ml
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