“Oenology - Nutrition & Health - Methods of analysis” Unit J. Claude Ruf, Ph.D. - OIV

1. 1 Intergovernmental Organisation Underpinning the credibility ofmeasurement results : How to combine skills of both OIV and international measurement infrastructure “Oenology - Nutrition & Health - Methods of analysis” Unit J. Claude Ruf, Ph.D. - OIV Workshop on Comparability and traceability in food analysis 18-19 November 2003 - Sevres (France)

2. 2 Overview • The wine sector : its economic value • The OIV : background information • Two examples • Collaborating with a metrology institute : how OIV profited • Future outlook

3. 3 2,9% 4,0% 4,9% 17,8% 70,5% 2001 2001 266,1 10 6 hl Europe % of different products in the UE final agriculture production America Africa Asia Oceania the wine sector : its economic value Wine production

4. 4 OIV - IRMM structures OIV : Intergovernmental organisation 47 member states Missions: - to assist other international organisations especially those which carry out standardisation activities; - to contribute to international harmonisation of existing practices and standards and, as necessary, to the preparation of new international standards IRMM : is part of the Directorate General - Joint Research Centre of the European Commission Missions: - The mission of the IRMM is to promote a common European measurement system in support of EU policies, especially health and consumer protection, environment, agriculture, internal market and industrial standards

5. Expert in wine matters and wine methods links to wine sector institutes knowledgeable on those issues that are key to quality & safety Experts in reference measurements & materials links to metrology, accreditation, standardisation bodies knowledgeable on best practice in measurements across sectors 5 A partnership based on strength ofOIVIRMM

6. 6 Common interest : Reliable measurement results • Measurements are used to make decisions - in trade - consumer protection • OIV goal : result from Chilean lab equivalent to that from France … • Creating confidence in measurements : - by showing that best practice is followed - by having a transparent system

7. 7 OIV : long tradition in measurements • Sub-commission on Analysis (since 1935 mod.1954) • OIV produces standardised methods (compendium) • OIV members perform validation of these methods on interlaboratory tests • Strong link with networks of field laboratories, national regulation systems, and with international organisation (e.g. Codex Alimentarius, CEN, ISO, AOAC, IAM )

8. 8 Measurement result quality : some key issues • Quality of a result : responsibility of individual laboratories in member states • Laboratory competence assessment : OIV stimulates use of accreditation • How equivalent is measurement capability across the world ? Diffic ult to assess for OIV

9. 9 Example 1 :The European project REFMAT OBJECTIVES: Establishing field reference materials for the authentication of food and beverages by isotopic analyses d D and d 18O of water d 13C of sugar and ethanol Certification of 5 Reference Materials suitable for isotopic analysis of wine, alcohol, fruit juices and sugars. Improve the comparison of isotopic determinations in enforcement laboratories funded by the DG Research of the European Commission (SMT3 - CT96 – 2086).

10. 10 Example 2 :IMEP-16 • 41st Meeting of the OIV sub-commission of methods of analysis • Presentation of the International measurement Evaluation Programme (IMEP-16) concerning lead in wine • - 160 laboratories, 40 countries • - Lead concentration: 27  0.33 µg/l • see http//www.irmm.jrc.be/imep • aim : global assessment measurement capability

11. 11 IMEP- 16: Pb in wine -1 Certified value : 27.18 ± 0.33 µg·L [ U=k·u ( k =2)] c 40.77 50 Pb Values above 50% 38.05 Use of an official method 40 Use of an official method 6 No use of an official method No use of an official method 20 No information 35.33 30 No info 1 32.62 20 29.90 10 27.18 0 24.46 -10 21.74 -20 official method 2676/90 19.03 -30 Values below -50% 16.31 -40 Use of an official method 3 'Less than' value No use of an official method 7 No use of an official method 5 No info 1 13.59 -50 Results from all participants in relation to the use of an official analytical method Assessing the quality of results of measurements : IMEP-16

12. 12 IMEP- 16: Pb in wine -1 Certified value : 27.18 ± 0. 33 µg·L [ U = k · u ( k =2)] c 40.8 50 28 values Pb amount content above 50% 38.1 40 35.3 30 27.2 32.6 20 OIVV 24.5 29.9 10 members 21.7 0 19.0 -10 16.3 -20 13.6 -30 -40 11 values below -50% 5 'less than' values -50 Results from all participants with indication of the results of the OIVV members Assessing the quality of results of measurements : IMEP-16

13. 13 ±50% BIPM-CCQM pilot study 12

14. 15 Conclusions :how did OIV profit ? • Link with a community previously unknown, opportunities for symbiosis • Reference Measurements and Materials is not OIV core business : profit from core business of others • Exposed to best practice : designation of laboratories (e.g. control, inspection, reference laboratories) should ideally be backed up by demonstrated competence

15. 16 Conclusion : further prospects • Scope for further strengthening link with metrology infrastructure via appropriate projects • interlaboratory comparisons • appropriate wine CRMs • appropriate training of laboratories and end-users (e.g. enforcers, regulators)