It is currently not possible to order printed and bound versions of standards. This is due to challenges related to our printing supplier. We are working to resolve the situation and apologize for any inconvenience this may cause. For other options, contact salg@standard.no.
Standard

NS-EN 16279:2012

Published
Preview

Corrigenda and amendments are bought separately.

Language
Services

Abstract

This European Standard specifies an ion-selective electrode method (ISE) after hydrochloric acid treatment for the determination of fluoride from animal feeding stuffs. The content of fluoride (F-) corresponds to that of fluorine (F) due to Commission Regulation (EU) 574/2011[3]. This European Standard is strictly based on several conventions like the use of 0,5 g test portion for extraction of fluoride from animal feeds by means of an acid treatment with 20 ml of 1 mol/l hydrochloric acid solution at ambient temperature (20 °C to 25 ºC) for 20 min and the control and adjustment of the pH at 5,5 in the buffered test solution before determination of fluoride by ISE using standard addition technique. The method was successfully tested in an interlaboratory study in concentrations between 100 mg/kg up to 500 mg/kg. Following strictly this method theoretically all concentrations from 40 mg/kg up to 4 000 mg/kg can be analysed within the linear calibration function. Only for concentrations lower than 40 mg/kg is the use of an interpolation technique required instead of standard addition Annex C. The quantification limit for fluoride using the conventions of the method including the standard addition technique is 40 mg/kg or lower than 2,5 mg/kg when using interpolation Annex C.

Document information

  • Standard from SN
  • Published:
  • Edition: 1
  • Version: 1
  • Document type: NAT
  • ICS 65.120
  • National Committee SN/K 644

Product Relations

  • Adopted from: EN 16279:2012 , 0