Standard

ISO 3360:1976

Publisert

Rettelser og tillegg kjøpes separat.

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Omfang

Applicable to products the F content of which is equal to or more than 0.5 mg/kg. Specifies the separation of the element from a test portion by steam distillation in a phosphoric acid medium. Formation of a blue-coloured complex with a combined reagent alizarin complexone/lanthanum nitrate in a buffered medium at the pH of 4.6. Addition of acetone to increase the stability of the complex and the sensitivity. Photometric measurement of the complex at a wavelength of about 600 nm.

Dokumentinformasjon

  • Standard fra ISO
  • Publisert:
  • Utgave: 1
  • Versjon: 1
  • Varetype: IS
  • ICS 67.220.20
  • ICS 71.060.30
  • ICS 71.060.50
  • ISO TC ISO/TC 47

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