General - Scope - Plants
Wageningen University is accredited for the organization of Interlaboratory Studies by the Dutch Accreditation Council RvA under registration number R002. The accreditation is based on the ISO/IEC- requirements (General requirements for proficiency testing, ISO/IEC 17043:2010). Determinands only meet the criteria for accreditation if the results are reported by a sufficient number of participants for at least three years and the results have proven to be homogeneous and stable.
Elements noted with $ are not in the scope of the accreditation.
| Program | Determinand group | Determinand |
|---|---|---|
| IPE | Inorganic Chemical Composition | Ag, As$, B$, Ba$, Be, Bi, Br, Ca$, Cd$, Cl (as Cl)$, Co$, Cr$, Cs, Cu$, F, Fe$, Ga, Hg$, I, K$, Li$, Mg$, Mn$, Mo$, N - Kjeldahl (as N)$, N - NH4 (as N), N - NO3 (as N), Na$, Ni$, P (as P)$, Pb$, Pd, Pt, Rb, Rh, S (as S)$, Sb$, Se$, Sn, SO4 (as SO4), Sr$, Ti, V$, Zn$ |
| IPE | Real totals | Al$, C - elementary$, N - elementary$, Si |
| IPE | Acid extractable (So-called totals) | Al$, Si |
| IPE | Other determinations | delta 13C$, delta 15N$ |
| IPE | Nutritional values | ADF-ash-free, Crude fibre$, NDF-ash-containing, NDF-ash-free, Polysaccharides (starch), Total ash$, Total Disaccharides, Total fat, Total monosaccharides |