Standard

NS-EN ISO 7327:1997

Publisert

Rettelser og tillegg kjøpes separat.

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Omfang

The principle of the method specified is reacting a small amount of free acid present in a test portion of acid anhydride hardener or accelerator with rhodamine 6G to colour the test solution pink, measuring the absorbance of the coloured solution at a wavelength of about 510 nm using a spectrometer, determining the free-acid content from a calibration curve. The method is suitable for most anhydrides except for polyester and oligomeric anhydrides which may give too wide a scatter of results.

Dokumentinformasjon

  • Standard fra SN
  • Publisert:
  • Utgave: 1
  • Versjon: 1
  • Varetype: NAT
  • ICS 83.080.10
  • National Committee SN/K 609

Produktrelasjon

  • Adoptert fra: EN ISO 7327:1997 , 0