MOSH/MOAH in edible oils (LC-GC-FID and GCxGC-FID)

Method ring test P2703-MRT is designed for the quantification of MOSH and MOAH by means of LC-GC-FID or similar methods. The quantification of total MOAH by GCxGC-FID is offered as an additional module.

LOQs of 2 mg/kg related to total MOSH resp. total MOAH are required for this method ring test in accordance with the expected maximum levels for MOAH in 2028.

Two test materials are offered:

a sample of palm oil (and the corresponding unspiked material), and
a sample of shea butter (and the corresponding unspiked material).

Spiked levels are within the typical ranges of contaminations of the respective matrix. The results related to the spiked materials are evaluated with respect to the comparability criterion (z-score) as well as with respect to the trueness criterion (70 to 120 % of the spiked level, as far as scientifically reasonable).

P2703-MRT is offered as a method ring test, which means,

the evaluation is not limited to the pure statistical evaluation.
the participants are asked to provide the chromatograms and plots related to the test materials.
the participants are asked to answer a questionnaire related to relevant aspects of the sample preparation and analysis.

The chromatograms as well as the answers related to the questionnaire are summarised in separate parts of the final report. For reasons of fairness, only those participants, which provide details and chromatograms will receive these parts of the report. The data will help to identify shortcomings, built the basis for further discussion and thus help to enhance the quality of the applied method.

Parameters

Test material - palm oil

MOSH ≥ C10 to ≤ C16, MOSH > C16 to ≤ C20, MOSH > C20 to ≤ C25, MOSH > C25 to ≤ C35, MOSH > C35 to ≤ C40, MOSH > C40 to ≤ C50, Total MOSH (≥ C10 to ≤ C50), MOAH ≥ C10 to ≤ C16, MOAH > C16 to ≤ C25, MOAH > C25 to ≤ C35, MOAH > C35 to ≤ C50, Total MOAH (≥ C10 to ≤ C50)

Blank material - palm oil

Test material - shea butter

Blank material - shea butter

Additional module (GCxGC-FID)

Palm oil TM - Total MOAH (≥ C10 to ≤ C50), Palm oil BM - Total MOAH (≥ C10 to ≤ C50), Shea butter TM - Total MOAH (≥ C10 to ≤ C50), Shea butter BM - Total MOAH (≥ C10 to ≤ C50)

Expected time schedule

Please register before:
15 December 2026

Dispatch of samples:
01 February 2027

Deadline for reporting results:
23 February 2027

Costs of P2703-MRT

Ring test and material	Amount	Price per unit
MOSH/MOAH in edible oils (LC-GC-FID and GCxGC-FID)	–	999 €
Test material - palm oil Palm oil with MOSH and MOAH	50 g	included
Blank material - palm oil Palm oil, unspiked.	50 g	included
Test material - shea butter Shea butter with MOSH and MOAH.	50 g	included
Blank material - shea butter Shea butter, unspiked.	50 g	included
Additional module (GCxGC-FID) Quantification by GCxGC-FID (total MOAH).		380 €

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