CCQM-K154.d
MEASURAND Mass fraction of patulin [PAT] present in solution acetonitrile (ACN)
NOMINAL VALUE 9 mg/kg to 68 mg/kg
Degrees of equivalence represented by Di = (xi - xRi) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
(CBKT) – value assigned stock solution of PAT in ACN supplied within the Mycotoxin Metrology Capacity Building and Knowledge Transfer (MMCBKT) project of the ‘Bureau International des Poids et Mesures’ (BIPM) as part of its "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme.
(CRM) – non-proprietary reference materials for the preparation of their own PAT solution.
(own) – own value assigned stock solution of PAT.
CCQM-K154.d
MEASURAND Mass fraction of patulin [PAT] present in solution acetonitrile (ACN)
NOMINAL VALUE 9 mg/kg to 68 mg/kg
Degrees of equivalence represented by Di = (xi - xRi) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mg/kg |
mg/kg |
mg/kg |
||
| INM (CBKT) A | 0.16 | 0.36 | ||
| INM (CBKT) B | 0.28 | 0.33 | ||
| EXHM (own) A | -0.21 | 0.39 | ||
| EXHM (own) B | -0.29 | 0.50 | ||
| NIMT (CBKT) A | 0.19 | 0.41 | ||
| NIMT (CBKT) B | 0.19 | 0.39 | ||
| NIS (CRM) A | 0.35 | 0.62 | ||
| NIS (CRM) B | 0.32 | 0.60 | ||
| UME (CBKT) A | -0.07 | 0.62 | ||
| UME (CBKT) B | -0.04 | 0.58 | ||
| INRAP (CBKT) A | 0.18 | 0.67 | ||
| INRAP (CBKT) B | 0.18 | 0.62 | ||
| INMETRO (CBKT) A | 0.22 | 1.12 | ||
| INMETRO (CBKT) B | 0.29 | 0.65 | ||
| LATU (CBKT) A | -0.25 | 0.87 | ||
| LATU (CBKT) B | -0.10 | 0.70 | ||
| INTI (CBKT) A | 0.39 | 0.75 | ||
| INTI (CBKT) B | 0.24 | 0.74 | ||
| NIM (own) A | 0.52 | 0.96 | ||
| NIM (own) B | 0.46 | 0.98 | ||
| NIM (CBKT) A | 0.27 | 1.06 | ||
| NIM (CBKT) B | 0.20 | 1.08 | ||
| SASO (CRM) A | 0.97 | 1.55 | ||
| SASO (CRM) B | 1.00 | 1.53 | ||
| NMISA (own) A | 0.40 | 2.21 | ||
| NMISA (own) B | 0.88 | 2.24 |
(CBKT) – value assigned stock solution of PAT in ACN supplied within the Mycotoxin Metrology Capacity Building and Knowledge Transfer (MMCBKT) project of the ‘Bureau International des Poids et Mesures’ (BIPM) as part of its "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme.
(CRM) – non-proprietary reference materials for the preparation of their own PAT solution.
(own) – own value assigned stock solution of PAT.
| Metrology area, Sub-field | Chemistry and Biology, Organics |
| Description | Patulin (PAT) in acetonitrile (ACN) |
| Time of measurements | 2022 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | Mass fraction mg/kg |
| Comparison type | Key Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | CCQM (Consultative Committee for Amount of Substance) |
| Comments | Gravimetric preparation and value assignment of patulin (PAT) in acetonitrile (ACN). Results published on 14th February 2024 |
| Pilot institute |
BIPM
Bureau International des Poids et Mesures BIPM - International Organization |
| Contact person | R. Josephs +33 (0) 1 45 07 70 55 |
| Pilot laboratory | |
|---|---|
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| EXHM/GCSL-EIM |
National Laboratory of Chemical Metrology/GCSL - Hellenic Institute of Metrology, Greece, EURAMET |
| INM (CO) |
Instituto Nacional de Metrología de Colombia, Colombia, SIM |
| INMETRO |
Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM |
| INRAP |
Institut National de Recherche et d'Analyse Physico-Chimique, Tunisia, AFRIMETS |
| INTI |
Instituto Nacional de Tecnologia Industrial, Argentina, SIM |
| LATU |
Laboratorio Tecnologico del Uruguay, Uruguay, SIM |
| NIM |
National Institute of Metrology, China, APMP |
| NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |
| NIS |
National Institute for Standards, Egypt, AFRIMETS |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| SASO-NMCC |
National Measurement and Calibration Center - Saudi Standards, Metrology and Quality Organization, Saudi Arabia, GULFMET |
| UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET |
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CCQM-K154.d
MEASURAND Mass fraction of patulin [PAT] present in solution acetonitrile (ACN)
NOMINAL VALUE 9 mg/kg to 68 mg/kg
For each Labi, the PAT mass fraction value used to establish the Key Comparison Reference Value xRi and its associated uncertainty uRi was assigned by the BIPM according to the calibration procedure described in the Final report.
| Labi | xR,i | uRi |
| mg/kg | mg/kg | |
| INM (CBKT) A | 9.84 | 0.13 |
| INM (CBKT) B | 9.72 | 0.10 |
| EXHM (own) A | 10.21 | 0.12 |
| EXHM (own) B | 10.29 | 0.20 |
| NIMT (CBKT) A | 12.41 | 0.14 |
| NIMT (CBKT) B | 12.41 | 0.12 |
| NIS (CRM) A | 14.15 | 0.18 |
| NIS (CRM) B | 14.18 | 0.17 |
| UME (CBKT) A | 14.72 | 0.23 |
| UME (CBKT) B | 14.69 | 0.20 |
| INRAP (CBKT) A | 15.73 | 0.23 |
| INRAP (CBKT) B | 15.73 | 0.19 |
| INMETRO (CBKT) A | 19.02 | 0.52 |
| INMETRO (CBKT) B | 18.95 | 0.24 |
| LATU (CBKT) A | 20.33 | 0.34 |
| LATU (CBKT) B | 20.18 | 0.21 |
| INTI (CBKT) A | 22.45 | 0.27 |
| INTI (CBKT) B | 22.60 | 0.26 |
| NIM (own) A | 25.69 | 0.42 |
| NIM (own) B | 25.75 | 0.42 |
| NIM (CBKT) A | 25.85 | 0.40 |
| NIM (CBKT) B | 25.92 | 0.41 |
| SASO (CRM) A | 26.19 | 0.39 |
| SASO (CRM) B | 26.16 | 0.37 |
| NMISA (own) A | 63.40 | 0.86 |
| NMISA (own) B | 62.92 | 0.88 |
For each sample, the degree of equivalence of each laboratory i with respect to the reference value is given by a pair of terms both expressed in mg/kg:
Di = (xi - xRi ) and Ui, its expanded uncertainty at a 95% level of confidence, Ui = 2(ui 2 + uRi 2)1/2
(CBKT) – value assigned stock solution of PAT in ACN supplied within the Mycotoxin Metrology Capacity Building and Knowledge Transfer (MMCBKT) project of the ‘Bureau International des Poids et Mesures’ (BIPM) as part of its "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme.
(CRM) – non-proprietary reference materials for the preparation of their own PAT solution.
(own) – own value assigned stock solution of PAT.
CCQM-K154.d
MEASURAND Mass fraction of patulin [PAT] present in solution acetonitrile (ACN)
NOMINAL VALUE 9 mg/kg to 68 mg/kg
xi measured mass fraction reported by laboratory i, Labi
ui combined standard uncertainty of xi
| Labi | xi | ui |
| mg/kg | mg/kg | |
| INM (CBKT) A | 10.00 | 0.13 |
| INM (CBKT) B | 10.00 | 0.13 |
| EXHM (own) A | 10.00 | 0.154 |
| EXHM (own) B | 10.00 | 0.154 |
| NIMT (CBKT) A | 12.60 | 0.152 |
| NIMT (CBKT) B | 12.60 | 0.152 |
| NIS (CRM) A | 14.5 | 0.25 |
| NIS (CRM) B | 14.5 | 0.25 |
| UME (CBKT) A | 14.65 | 0.21 |
| UME (CBKT) B | 14.65 | 0.21 |
| INRAP (CBKT) A | 15.9157 | 0.2387 |
| INRAP (CBKT) B | 15.9157 | 0.2387 |
| INMETRO (CBKT) A | 19.24 | 0.22 |
| INMETRO (CBKT) B | 19.24 | 0.22 |
| LATU (CBKT) A | 20.08 | 0.28 |
| LATU (CBKT) B | 20.08 | 0.28 |
| INTI (CBKT) A | 22.84 | 0.26 |
| INTI (CBKT) B | 22.84 | 0.26 |
| NIM (own) A | 26.21 | 0.24 |
| NIM (own) B | 26.21 | 0.24 |
| NIM (CBKT) A | 26.12 | 0.35 |
| NIM (CBKT) B | 26.12 | 0.35 |
| SASO (CRM) A | 27.16 | 0.67 |
| SASO (CRM) B | 27.16 | 0.67 |
| NMISA (own) A | 63.8 | 0.69 |
| NMISA (own) B | 63.8 | 0.69 |
(CBKT) – value assigned stock solution of PAT in ACN supplied within the Mycotoxin Metrology Capacity Building and Knowledge Transfer (MMCBKT) project of the ‘Bureau International des Poids et Mesures’ (BIPM) as part of its "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme.
(CRM) – non-proprietary reference materials for the preparation of their own PAT solution.
(own) – own value assigned stock solution of PAT.
