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Water Chemicals Codex (1982) / Chapter Skim
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Sodium Zinc Potassium Polyphosphate, Glassy
Pages 68-69

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From page 68...
... Use e Used as corrosion inhibitor. Puritv Requirements: Analyses of available grades of glassy sodium zinc potassium polyphosphate show the presence of cadmium and lead, but at levels far below that which would necessitate RMIC values based on a maximum dosage of 13.7 to 14.1 mg/liter, depending on the P2O5 content of the specific product used.
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From page 69...
... Process a reagent blank by the same procedure. Sample Analyses: The analyses are to be performed on the sodium zinc potassium polyphosphate solution in accordance with: Standard Methods for the Examination of Water and Wastewater, 15th Edition, American Public Health Association, Washington, D.C.
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Key Terms

  • potassium polyphosphate
  • sodium zinc
  • distilled water
  • deionized distilled
  • sodium tripolyphosphate

  • glassy sodium
  • polyphosphate solution
  • health association
  • values based
  • quantitatively transfer

  • volumetric flask
  • available grades
  • bulk sample
  • maximum dosage
  • american water

  • necessitate rmic
  • rmic values
  • standard methods
  • volume below
  • corrosion inhibitor

  • specific product
  • following protocol
  • reagent blank
  • lead section
  • cadmium lead

  • american public
  • public health
  • gently heat
  • analytical sample


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