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BS EN 15948:2015 Cereals. Determination of moisture and protein. Method using Near-Infrared-Spectroscopy in whole kernels, 2015
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle
- 5 Method of analysis [Go to Page]
- 5.1 General
- 5.2 Near Infrared Instrument
- 5.3 Prediction models
- 5.4 Initial validation of the model [Go to Page]
- 5.4.1 General
- 5.4.2 Initial validation sample set
- 5.4.3 Initial validation performances
- Table 1 — NIR performances for the determination of moisture and protein (see also Annex B) [Go to Page]
- 5.5 Update of calibration model and validation of new model
- 6 Sampling
- 7 Procedure [Go to Page]
- 7.1 Preparation of the test sample
- 7.2 Measurement
- 7.3 Local validation of the method
- 7.4 Periodical adjustment of the instrument
- 7.5 Checking instrument stability
- 7.6 Follow up of method performance
- 8 Calculation and expression of results
- 9 Accuracy and precision of the method [Go to Page]
- 9.1 Accuracy
- 9.2 Precision [Go to Page]
- 9.2.1 General
- 9.2.2 Repeatability
- 9.2.3 Reproducibility
- 9.2.4 Critical difference [Go to Page]
- 9.2.4.1 General
- 9.2.4.2 Comparison of two groups of measurements in one laboratory
- 9.2.4.3 Comparison of two groups of measurements in two laboratories
- 10 Test Report
- Annex A (informative) Results of examples of interlaboratory test
- A.1 FOSS interlaboratory test
- Table A.1 — Samples for the interlaboratory study
- Table A.2 — Results of statistical analysis for the determination of the protein content in wheat by the ANN model WB003034
- Table A.3 — Results of statistical analysis for the determination of the protein content in barley by the ANN model WB003034
- Table A.4 — Results of statistical analysis for the determination of the moisture content in wheat by ANN model WB003034
- Table A.5 — Results of statistical analysis for the determination of the moisture content in barley by ANN model WB003034
- Figure A.1 — Standard deviations for the repeatability, sr, and reproducibility, sR, as a function of the protein content
- Figure A.2 — Standard deviations for the repeatability, sr, and reproducibility, sR, as a function of the moisture content
- A.2 PERTEN interlaboratory test
- Table A.6 — Samples for the interlaboratory study
- Table A.7 — Results of statistical analysis for the determination of the protein content in wheat by Inframatic 9500 Wheat Calibrations Version 5, March 19, 2013
- Table A.8— Results of statistical analysis for the determination of the protein content in barley by Inframatic 9500 Barley Calibrations Version 6, March 19, 2013
- Table A.9 — Results of statistical analysis for the determination of the moisture content in wheat by Inframatic 9500 Wheat Calibrations Version 5, March 19, 2013
- Table A.10 — Results of statistical analysis for the determination of the moisture content in barley by Inframatic 9500 Barley Calibrations Version 6, March 19, 2013
- Figure A.3 — Standard deviations for the repeatability, sr, and reproducibility, sR, as a function of the protein content
- Figure A.4 — Standard deviations for the repeatability, sr, and reproducibility, sR, as a function of the moisture content
- A.3 CHOPIN Technologies interlaboratory test
- Table A.11 — Wheat Samples for the interlaboratory study
- Table A.12 — Barley Samples for the interlaboratory study
- Table A.13 a) — Results of statistical analysis for the determination of the protein content in wheat by Infraneo PLS model bl-pro03.cal
- Table A.13 b) — Results of statistical analysis for the determination of the protein content in wheat by Infraneo PLS model bl-pro03.cal
- Table A.14 a) — Results of statistical analysis for the determination of the protein content in barley by Infraneo PLS model or-pro03.cal
- Table A.14 b) — Results of statistical analysis for the determination of the protein content in barley by Infraneo PLS model or-pro03.cal
- Table A.15 a) — Results of statistical analysis for the determination of the moisture content in wheat by Infraneo PLS model bl-hum05.cal
- Table A.15 b) — Results of statistical analysis for the determination of the moisture content in wheat by Infraneo PLS model bl-hum05.cal
- Table A.16 a) — Results of statistical analysis for the determination of the moisture content in barley by Infraneo PLS model or-hum05.cal
- Table A.16 b) — Results of statistical analysis for the determination of the moisture content in barley by Infraneo PLS model or-hum05.cal
- Figure A.5 — Standard deviations for the repeatability, sr, and reproducibility, sR, as a function of the protein content on wheat samples
- Figure A.6 — Standard deviations for the repeatability, sr, and reproducibility, sR, as a function of the protein content on barley samples
- Figure A.7 — Standard deviations for the repeatability, sr, and reproducibility, sR, as a function of the moisture content on wheat samples
- Figure A.8 — Standard deviations for the repeatability, sr, and reproducibility, sR, as a function of the moisture content on barley samples
- Annex B (informative) Validation of ANN prediction model WB003034
- B.1 ANN prediction model WB003034 with associated database
- Table B.1 — ANN prediction model WB003034
- B.2 Results of validation according to EN ISO 12099
- Table B.2 — ANN model WB003034 validation summary
- Table B.3 — Origin of samples used for the validation of the ANN model WB003034
- Figure B.1 — Plot of reference vs. predicted moisture results using the ANN model WB003034 (bias 0,01, slope 1,00)
- Figure B.2 — Plot of reference vs. predicted protein results using the ANN model WB003034 (bias 0,01; slope 1,00)
- B.3 Stability and robustness
- Figure B.3 — Average deviation of protein values predicted by the model WB003034 from the best estimate of the true value as established by the mean value of the master labs of European networks (border lines : +/- 2 standard deviations of reproducibi...
- Figure B.4 — Average deviation of moisture values predicted by the model WB003034 from the best estimate of the true value as established by the mean value of the master labs of European networks (border lines : +/- 2 standard deviations of reproducib...
- Annex C (informative) Validation of Inframatic 9500 prediction models
- C.1 Perten Inframatic 9500 prediction models
- Table C.1 — Inframatic 9500 Wheat Calibrations Version 5, March 19, 2013
- Table C.2 — Inframatic 9500 Barley Calibrations Version 6, March 19, 2013
- C.2 Results of validations according to EN ISO 12099
- Table C.3 — Validation summary for Perten Inframatic 9500 calibrations
- Figure C.1 — Histogram of samples used for the validation of the prediction model - Inframatic 9500 Barley Calibrations Version 6, March 19, 2013 – for the moisture content in barley samples (no of samples vs. % moisture)
- Figure C.2 — Histogram of samples used for the validation of the prediction model - Inframatic 9500 Barley Calibrations Version 6, March 19, 2013 - for the protein content of barley samples (no of samples vs. % protein d.m.)
- Figure C.3 — Histogram of samples used for the validation of the prediction model - Inframatic 9500 Wheat Calibrations Version 5, March 19, 2013 – for the moisture content in wheat samples (no of samples vs. % moisture)
- Figure C.4 — Histogram of samples used for the validation of the prediction model - Inframatic 9500 Wheat Calibrations Version 5, March 19, 2013 - for the protein content of wheat samples (no of samples vs. % protein d.m.)
- Figure C.5 — Validation of the Inframatic 9500 Barley Calibrations Version 6 from March 19, 2013: Plot of reference vs. predicted moisture results.
- Figure C.6 — Validation of the Inframatic 9500 Barley Calibrations Version 6 from March 19, 2013: Plot of reference vs. predicted protein results.
- Figure C.7 — Validation of the Inframatic 9500 Wheat Calibrations Version 5 from March 19, 2013: Plot of reference vs. predicted moisture results.
- Figure C.8 — Validation of the Inframatic 9500 Wheat Calibrations Version 5 from March 19, 2013: Plot of reference vs. predicted protein results.
- Annex D (informative) Validation of Infraneo prediction models
- D.1 CHOPIN Technologies Infraneo prediction models
- Table D.1 — Infraneo Calibration models
- D.2 Results of validation according to EN ISO 12099
- Table D.2 — Infraneo prediction models validation summary
- Figure D.1 — Distribution of samples used for the validation of the Infraneo prediction model or-hum05.cal for moisture content on barley.
- Figure D.2 — Distribution of samples used for the validation of the Infraneo prediction model or-pro03.cal for protein content on barley.
- Figure D.3 — Distribution of samples used for the validation of the Infraneo prediction model bl-hum05.cal for moisture content on wheat.
- Figure D.4 — Distribution of samples used for the validation of the Infraneo prediction model bl-pro03.cal for protein content on wheat.
- Figure D.5 — Reference values vs. predicted results for moisture on barley
- Figure D.6 — Reference values vs. predicted results for protein on barley
- Figure D.7 — Reference values vs. predicted results for moisture on wheat
- Figure D.8 — Reference values vs. predicted results for protein on wheat
- Bibliography [Go to Page]