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Indicator name | national standard | Company standard | ||
Mass fraction of total iron /% ≥ | 19 | 21 | ||
Basicity /% | 8.0-16.0 | 12.0-14.0 | ||
Mass fraction of insoluble matter /% ≤ | 0.2 | 0.1 | ||
PH value (10g / L aqueous solution) | 2.0-3.0 | 2.4 | ||
Mass fraction of reducing substance (Fe2 +) /% ≤ | 0.15 | 0.03 | ||
Mass fraction of as /% ≤ | 0.0002 | 0.0001 | ||
Mass fraction of Pb /% ≤ | 0.001 | 0.001 | ||
Mass fraction of Cd /% ≤ | 0.0002 | 0.0001 | ||
Mass fraction of Hg /% ≤ | 0.0001 | 0.0001 | ||
Mass fraction of Cr /% ≤ | 0.0005 | 0.0001 | ||
Mass fraction of Zn /% ≤ | 0.005 | 0.002 | ||
Mass fraction of Ni /% ≤ | 0.005 | 0.001 | ||
The product indicators meet the drinking water grade Polyferric standard gb14591-2016. | ||||















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