(1) "lot" means an identifiable quantity of food delivered at one time and determined by the competent authority to have common characteristics, such as origin, variety, species, catch area, type of packing, packer, consignor or markings; (2) "sublot" means a physically separated and identifiable part of a large lot, designated to apply the sampling method; (3) "incremental sample" means a quantity of material taken from a single place in the lot or sublot; (4) "aggregate sample" means the combined total of all the incremental samples taken from the lot or sublot; (5) "laboratory sample" means a representative part or quantity of the aggregate sample intended for the laboratory; (6) "comparable size or weight" means a difference in size or weight that does not exceed 50 %; (7) "precision" means the closeness of agreement between independent test results obtained under stipulated conditions. Precision is expressed as the standard deviation or coefficient of variation of the test results; (8) "within laboratory reproducibility or intermediate precision (RSD R )" means precision under a set of within-laboratory conditions in a specific laboratory;(9) "limit of quantification ("LOQ")" means the lowest content of the analyte which can be measured with reasonable statistical certainty, i.e. the lowest concentration or mass of the analyte that has been validated with acceptable accuracy by applying the complete analytical method and identification criteria; (10) "combined standard measurement uncertainty ("u")" means a non-negative parameter associated with the result of measurement, which characterises the dispersion of values that could reasonably be attributed to the measurand based on the information used. It is obtained using the individual standard measurement uncertainties associated with the input quantities in a measurement model; (11) "expanded measurement uncertainty ("U")" means the value which is obtained using a coverage factor of 2 which gives a level of confidence of approximately 95 % (U = 2u); (12) "trueness" means the closeness of agreement between the average value obtained from a large series of test results and an accepted reference value. This value can be estimated from regular analysis of certified reference materials, fortification experiments or participation in inter-laboratory studies and is expressed as apparent bias.
Commission Implementing Regulation (EU) 2022/1428 of 24 August 2022 laying down methods of sampling and analysis for the control of perfluoroalkyl substances in certain foodstuffs (Text with EEA relevance)
(a) do not wear clothing or gloves that contain fluoropolymer linings or that are treated with PFASs to improve water and stain repellence; (b) do not use PFASs containing moisturizers, cosmetics, hand cream, sunscreens and related products at the sampling day.
Lot weight (ton) | Weight or number of sublots |
---|---|
≥ | |
> | |
≥ | |
< | — |
Lot weight (ton) | Weight or number of sublots |
---|---|
≥ | |
< | — |
Weight or volume of lot/sublot (in kilogram or litre) | Minimum number of incremental samples to be taken |
---|---|
< | |
≥ | |
> |
Number of packages or units in the lot/sublot | Number of packages or units to be taken |
---|---|
≤ | at least 1 package or unit |
about 5 %, at least 2 packages or units | |
> | about 5 %, at maximum 10 packages or units |
Parameter | Criterion |
---|---|
Applicability | Foods specified in Regulation (EC) No 1881/2006 |
Selectivity | Analytical methods shall demonstrate the ability to reliably and consistently separate the analytes of interest from other co-extracted and possibly interfering compounds that may be present. |
Within-laboratory reproducibility (intermediate precision)(RSD | ≤ 20 % |
Trueness | -20 % to +20 % |
LOQ | The LOQ for PFOS, PFOA, PFNA and PFHxS each ≤ the maximum level for the respective individual PFAS. Compliance with this requirement entails that no LOQ shall be derived for the concentration of the sum of PFOS, PFOA, PFNA and PFHxS, which is calculated by summing up only the concentrations of PFOS, PFOA, PFNA and PFHxS, which were quantified at or above their respective LOQ. |