欧洲标准局IRMM JRC 参考物质证书 BCR-652 BEER (EtOH, very low level) certificate.pdf

EUROPEAN COMMISSION JOINT RESEARCH CENTRE Institute for Reference Materials and Measurements CERTIFIED REFERENCE MATERIAL BCR® – 652 CERTIFICATE OF ANALYSIS BEER, NOMINAL 0.05 % VOL Volume fraction Certified value 1) Uncertainty 2) [%] [%] Ethanol 0.051 0.002 1) This value is the unweighted mean of 12 accepted results obtained independently by different laboratories. This value is specific to the GC-FID method in Annex I of the certification report. 2) Half-width of the 95 % confidence interval of the mean. This certificate is valid for one year after purchase. Sales date: The minimum amount of sample to be used is 2 mL. NOTE This material has been certified by BCR (Community Bureau of Reference, the former reference materials programme of the European Commission). The certificate has been revised under the responsibility of IRMM. Brussels, November 1997 Revised: February 2007 Signed: Prof. Dr. Hendrik Emons Unit for Reference Materials EC-JRC-IRMM Retieseweg 111 2440 Geel, B