The standard applies to the examination of animal feed. For vegetable and animal fats and oils, see NEN 1046. The ash obtained can be used to determine the ash that is insoluble in hydrochloric acid (NEN 3330) or in lye and hydrochloric acid (NEN 3331).
NEN 3329-1969 history
1969NEN 3329-1969 Feeding stuffs. Determination of crude ash