interlaboratory test  for determinands in biomass

Biomass Exchange Programme - BIMEP

Proficiency tests

Participation is open to all laboratories.


Test programme Biomass
Number of rounds 2 per year
Number of samples 4 per round
Simple size 40 g
Origin Natural source
Excerise name BIMEP

General information

  • The sample types/matrices are chosen to represent the materials which you normally analyse.
  • The samples types are plant materials, woods and waste (sewage sludge).
  • The samples are dried, milled and sieved to <0.5 mm and are stable for over a number of years when stored at room temperature.
  • The homogeneity of each batch of samples is tested on a selection of parameters.
  • 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 and Analysis

    Proximate analysis


    Determinand group

    • General Analysis (Proximate analysis)

    Click here for more detailed information about the determinands and the scope of accreditation.

    Elementary analyses


    Determinand group

    • Elementary Analysis

    Click here for more detailed information about the determinands and the scope of accreditation.

    Several Elements


    Determinand group

    • Major Elements
    • Minor Elements
    • Water Soluble Elements

    Click here for more detailed information about the determinands and the scope of accreditation.

    Webshop

    Samples of previous proficiency tests are sold as reference materials. Available materials can be selected and ordered in our webshop. Participants of our proficiency tests are entitled to a discount.