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Paragraph 9 EXPRESSION OF RESULTS

Original text. Later amendments are not shown.

The calcium (Ca) content of the fertiliser is as follows:

Ca(%)=n×0.2004×t0.02×v1v2×m

where:

  • n = the volume of 0.2 M permanganate used, in millilitres,

  • m = the mass of the test sample in grams,

  • v2 = the aliquot volume in millilitres,

  • v1 = the volume of the extraction solution in millilitres,

  • t = the molarity of the permanganate solution in moles per litre.

  • CaO (%) = Ca (%) × 1.400.