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MOSH and MOAH in edible oil and chocolate muesli (P1815-MRT)

The quantification of MOSH and MOAH in foodstuff is a challenge, even though major parts of the analytical procedure are highly automised. Besides the instrumental analysis, the sample pre-treatment (specific clean-up) as well as the integration and interpretation of the resulting chromatograms are critical steps in analysing MOSH and MOAH.

Two test materials are offered in P1815-MRT:

  • Rapeseed oil:
    The oil is spiked with MOSH and MOAH.
    50 ml of the spiked oil is provided as test material.
    Blank material is available upon request.

    The results are evaluated with respect to
          - the trueness criterion (recovery of the spiked level) and
          - the comparability criterion (z-score).

  • Chocolate muesli:
    The chocolate muesli contains levels of MOSH and MOAH due to migration from cardboard boxes under controlled conditions.
    25 g of the homogenised muesli are provided as test material.

    The results are evaluated with respect to
          - the comparability criterion (z-score).


And beyond the pure statistical evaluation? 

P1815-MRT is a method ring test. That means, the evaluation is not limited to the pure statistical evaluation of the provided data. We will have a closer look at the small but important details, which may highly influence the outcome. 

For that purpose,

  • all participants are asked to provide the chromatograms of both test samples and of a blank sample including the integration of the humps. All chromatograms are published (anonymised with the lab code) in the final report.

  • questionnaire is provided related to the analytical details like internal standards, sample-pretreatment, etc.

The analytical details, which are mentioned above are summarised in a separate part of the final report. For reasons of fairness, only those participants, which provide details and chromatograms will receive the second part of the report. These data, anonymised and summarised, will help to identify shortcomings, built the basis for further discussion and thus help to enhance the quality of the applied methods.

New time schedule:

  • Register before:
    April 30, 2018
  • Dispatch of samples:
    June 25, 2018
  • Deadline for reporting results:
    July 20, 2018

The participation fee is 900 EUR, blank material (oil only) is available at a price of 70 EUR upon request. 

The test material is shipped by express courier. Shipping costs are included for shipment to EU countries. Additional shipping costs may apply for shipment to Non-EU countries.
Please feel free to contact us and we will prepare and individual quote. 

Please feel free to place your orders via the Order/login section on the website.

Note: PROOF-ACS reserves the right to cancel tests in case of less than ten participants.