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$ |