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.

Determinands that are not in bold are not subject to accreditation.

ProgramDeterminand groupDeterminand
IPEInorganic Chemical CompositionAg, 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
IPEReal totalsAl, C - elementary, N - elementary, Si
IPEAcid extractable (So-called totals)Al, Si
IPEOther determinationsdelta 13C, delta 15N
IPENutritional valuesADF-ash-free, Crude fibre, NDF-ash-containing, NDF-ash-free, Polysaccharides (starch), Total ash, Total Disaccharides, Total fat, Total monosaccharides
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