Plants - IPE

Banana plants on a plantation

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Participation in the International Plant-analytical Exchange (IPE) programme is open to all laboratories. The normal validated methods and procedures of each laboratory should be used to analyse the test materials. Laboratories are requested to fill in method information codes (MIC) for each determinand. This allows laboratories to review the range and similarity of the methodologies used.

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Test programmePlant

Number of rounds

4 per year

Number of samples

4 per round

Sample size

20 g

Origin

Natural source

Exercise name

IPE

  1. Test programme

    Number of rounds

    Plant

    4 per year

  2. Test programme

    Number of samples

    Plant

    4 per round

  3. Test programme

    Sample size

    Plant

    20 g

  4. Test programme

    Origin

    Plant

    Natural source

  5. Test programme

    Exercise name

    Plant

    IPE

General Information

  • The sample types/matrices are chosen to represent the materials which you normally analyse.
  • The plant samples are dried at max. 70°C and milled and sieved to <0.5 mm.
  • The homogeneity of each batch of samples is tested on a selection of parameters.
  • The dried plant samples are stored at -20°C and are stable over a number of years.
  • You analyze the test materials according to your normal validated methods and procedures for those elements and parameters you are interested in.
  • Your results are processed at WEPAL-QUASIMEME and published every three months under confidential code names.
  • The reports contain all data, statistical evaluation including Z-score plots and method information about the method used.
  • Your reports are available within one month after the submission deadline.
  • New determinands can be added on request.

Determinands

The list below shows the typical determinands for the International Plant-analytical Exchange. For a list of determinands which are under the scope of accreditation please check here.

TABEL INVOEGEN

Analyte groupTypical analytes

Acid extractable (So-called totals)

Al, Si

Real totals

Al, C - elementary, N - elementary, Si

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

Nutritional values

ADF-ash-free, Crude fibre, NDF-ash-containing, NDF-ash-free, Polysaccharides (starch), Total ash, Total Disaccharides, Total fat, Total monosaccharides

Other determinations

delta 13C, delta 15N, moisture content, CN detn, stable isotope ratios

  1. Analyte group

    Acid extractable (So-called totals)

    Typical analytes

    Al, Si

  2. Analyte group

    Real totals

    Typical analytes

    Al, C - elementary, N - elementary, Si

  3. Analyte group

    Inorganic Chemical Composition

    Typical analytes

    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

  4. Analyte group

    Nutritional values

    Typical analytes

    ADF-ash-free, Crude fibre, NDF-ash-containing, NDF-ash-free, Polysaccharides (starch), Total ash, Total Disaccharides, Total fat, Total monosaccharides

  5. Analyte group

    Other determinations

    Typical analytes

    delta 13C, delta 15N, moisture content, CN detn, stable isotope ratios

Reference materials

Samples of previous proficiency tests are sold as reference materials. Available materials can be selected and ordered in our webshop. In our webshop it is also possible to request a quotation. Participants of our proficiency tests are entitled to a discount.