Certified reference materials - hay powder (CRM 129) and rye grass (CRM 281) - for the quality control of analysis of animal feed
Analyses of nutritive elements are routinely performed in grass or hay for animal feed in order to improve the health and growth of domestic animals. To control the quality of such determinations, the Community Bureau of Reference has produced two certified reference materials - hay powder (CRM 129) and rye grass (CRM 281). After careful preparation of the materials, a homogeneity study and a long-term stability study, the contents of the elements Ca, K, Mg, P, S, Zn, I, N and Kjeldahl-N were certified in CRM 129, whereas CRM 281 was certifed for As, B, Cd, Cu, Hg, Mn, Mo, Ni, Pb, Sb, Se and Zn. This paper describes the certification exercise and concentrates on the elements I, B and Mo as examples of analytical work. Indicative values for Co, Cr, Fe, Cl and Na were also obtained.
Bibliographic Reference: Article: Mikrochimica Acta (Wien), Vol. III (1990) pp. 87-99
Record Number: 199110319 / Last updated on: 1994-12-02
Original language: en
Available languages: en