CCQM-K154.a and CCQM-K154.a.1
MEASURAND trans-zearalenone (trans-ZEN) in acetonitrile (ACN)
NOMINAL VALUE from 12 mg/kg to 68 mg/kg
Degrees of equivalence represented by Di = (wI - wR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
The subsequent comparison CCQM‑K154.a.1 was launched at the April 2019 CCQM Organic Analysis Working Group meeting in order to repeat measurements of INTI samples.
The samples are indicated by A, B....
(CBKT) - sample provided via the "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme; (own) - the sample is provided by the institute.
CCQM-K154.a and CCQM-K154.a.1
MEASURAND trans-zearalenone (trans-ZEN) in acetonitrile (ACN)
NOMINAL VALUE from 12 mg/kg to 68 mg/kg
Degrees of equivalence represented by Di = (wI - wR)/wR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in %.
The subsequent comparison CCQM‑K154.a.1 was launched at the April 2019 CCQM Organic Analysis Working Group meeting in order to repeat measurements of INTI samples.
The samples are indicated by A, B....
(CBKT) - sample provided via the "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme; (own) - the sample is provided by the institute.
CCQM-K154.a and CCQM-K154.a.1
MEASURAND trans-zearalenone (trans-ZEN) in acetonitrile (ACN)
NOMINAL VALUE from 12 mg/kg to 68 mg/kg
Degrees of equivalence represented by Di = (wI - wR) 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 |
||
| UME (CBKT) A | -0.11 | 0.28 | ||
| UME (CBKT) B | -0.14 | 0.27 | ||
| NMISA (own) A | 0.12 | 0.27 | ||
| NMISA (own) B | 0.10 | 0.31 | ||
| NIM (own) A | -0.18 | 0.47 | ||
| NIM (own) B | -0.07 | 0.36 | ||
| NIM (CBKT) A | 0.24 | 0.49 | ||
| NIM (CBKT) B | 0.10 | 0.33 | ||
| INTI (CBKT) A | 0.40 | 0.38 | ||
| INTI (CBKT) B | 0.36 | 0.34 | ||
| INMETRO (CBKT) A | 0.26 | 0.34 | ||
| INMETRO (CBKT) B | 0.17 | 0.71 | ||
| EXHM (own) A | -0.20 | 0.38 | ||
| EXHM (own) B | -0.27 | 0.38 | ||
| KEBS (CBKT) A | 0.12 | 0.30 | ||
| KEBS (CBKT) B | -0.05 | 0.29 | ||
| NIMT (CBKT) A | 0.28 | 0.40 | ||
| NIMT (CBKT) B | 0.22 | 0.35 | ||
| NRC (own) A | -0.40 | 1.40 | ||
| NRC (own) B | -0.18 | 1.38 | ||
| INTI (CBKT) C | -0.11 | 0.32 | ||
| INTI (CBKT) D | -0.11 | 0.34 |
The subsequent comparison CCQM‑K154.a.1 was launched at the April 2019 CCQM Organic Analysis Working Group meeting in order to repeat measurements of INTI samples.
The samples are indicated by A, B....
(CBKT) - sample provided via the "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme; (own) - the sample is provided by the institute.
CCQM-K154.a and CCQM-K154.a.1
MEASURAND trans-zearalenone (trans-ZEN) in acetonitrile (ACN)
NOMINAL VALUE from 12 mg/kg to 68 mg/kg
Degrees of equivalence represented by Di = (wI - wR)/wR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in %.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
% |
% |
% |
||
| UME (CBKT) A | -0.88 | 2.22 | ||
| UME (CBKT) B | -1.14 | 2.10 | ||
| NMISA (own) A | 0.99 | 2.18 | ||
| NMISA (own) B | 0.81 | 2.50 | ||
| NIM (own) A | -1.41 | 3.68 | ||
| NIM (own) B | -0.54 | 2.83 | ||
| NIM (CBKT) A | 1.86 | 3.83 | ||
| NIM (CBKT) B | 0.77 | 2.54 | ||
| INTI (CBKT) A | 2.69 | 2.57 | ||
| INTI (CBKT) B | 2.40 | 2.35 | ||
| INMETRO (CBKT) A | 1.76 | 2.33 | ||
| INMETRO (CBKT) B | 1.16 | 4.92 | ||
| EXHM (own) A | -1.34 | 2.50 | ||
| EXHM (own) B | -1.77 | 2.49 | ||
| KEBS (CBKT) A | 0.85 | 2.02 | ||
| KEBS (CBKT) B | -0.35 | 1.95 | ||
| NIMT (CBKT) A | 1.91 | 2.72 | ||
| NIMT (CBKT) B | 1.47 | 2.41 | ||
| NRC (own) A | -0.6 | 2.1 | ||
| NRC (own) B | -0.27 | 2.08 | ||
| INTI (CBKT) C | -0.77 | 2.13 | ||
| INTI (CBKT) D | -0.77 | 2.31 |
The subsequent comparison CCQM‑K154.a.1 was launched at the April 2019 CCQM Organic Analysis Working Group meeting in order to repeat measurements of INTI samples.
The samples are indicated by A, B....
(CBKT) - sample provided via the "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme; (own) - the sample is provided by the institute.
| Metrology area, Sub-field | Chemistry and Biology, Organics |
| Description | Trans-zearalenone (ZEN) in acetonitrile (ACN) |
| Time of measurements | 2018 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| References | |
| Measurand | Mass fraction of trans-zearalenone (ZEN) in acetonitrile (ACN) (in mg/kg) |
| Transfer device | Dedicated samples |
| Comparison type | Key Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | CCQM (Consultative Committee for Amount of Substance) |
| Comments | |
| 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 |
| INMETRO |
Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM |
| INTI |
Instituto Nacional de Tecnologia Industrial, Argentina, SIM |
| KEBS |
Kenya Bureau of Standards, Kenya, AFRIMETS |
| NIM |
National Institute of Metrology, China, APMP |
| NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| NRC |
National Research Council, Canada, SIM |
| UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET |
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CCQM-K154.a and CCQM-K154.a.1
MEASURAND trans-zearalenone (trans-ZEN) in acetonitrile (ACN)
NOMINAL VALUE from 12 mg/kg to 68 mg/kg
The key comparison reference value wR and its associated standard uncertainty uR are defined as the determination of mass fraction of each sample carried out by the International Bureau of Weights and Measures (BIPM).
CCQM-K154.a and CCQM-K154.a.1
MEASURAND trans-zearalenone (trans-ZEN) in acetonitrile (ACN)
NOMINAL VALUE from 12 mg/kg to 68 mg/kg
The key comparison reference value wR and its associated standard uncertainty uR are defined as the determination of mass fraction of each sample carried out by the International Bureau of Weights and Measures (BIPM).
CCQM-K154.a and CCQM-K154.a.1
MEASURAND trans-zearalenone (trans-ZEN) in acetonitrile (ACN)
NOMINAL VALUE from 12 mg/kg to 68 mg/kg
wKCRV determined key comparison reference value for specified sample
u (wKCRV) combined standard uncertainty of wKCRV
U (wKCRV) expanded uncertainty of wKCRV at 95 % level of confidence where Ui = 2 ui
wi measured mass fraction reported by laboratory i, Labi
ui (wi) combined standard uncertainty of wi
Ui (wi) expanded uncertainty of wi at 95 % level of confidence where Ui = 2 ui
Di determined absolute deviation from the Key Comparison reference Value (KCRV)
Ui combined and expanded uncertainty of Di
Q. R. quantification range
The subsequent comparison CCQM‑K154.a.1 was launched at the April 2019 CCQM Organic Analysis Working Group meeting in order to repeat measurements of INTI samples.
The samples are indicated by A, B....
(CBKT) - sample provided via the "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme; (own) - the sample is provided by the institute.
CCQM-K154.a and CCQM-K154.a.1
MEASURAND trans-zearalenone (trans-ZEN) in acetonitrile (ACN)
NOMINAL VALUE from 12 mg/kg to 68 mg/kg
wKCRV determined key comparison reference value for specified sample
u (wKCRV) combined standard uncertainty of wKCRV
U (wKCRV) expanded uncertainty of wKCRV at 95 % level of confidence where Ui = 2 ui
wi measured mass fraction reported by laboratory i, Labi
ui (wi) combined standard uncertainty of wi
Ui (wi) expanded uncertainty of wi at 95 % level of confidence where Ui = 2 ui
Di determined relative deviation from the Key Comparison reference Value (KCRV)
Ui combined and expanded uncertainty of Di
Q. R. quantification range
The subsequent comparison CCQM‑K154.a.1 was launched at the April 2019 CCQM Organic Analysis Working Group meeting in order to repeat measurements of INTI samples.
The samples are indicated by A, B....
(CBKT) - sample provided via the "Metrology for Safe Food and Feed in Developing Economies" Capacity Building Programme; (own) - the sample is provided by the institute.
