jrc79301_report%20eu-rl%20pahs%20pt%20on%20chocolate%202012_ver11

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µg/kg Distribution of individual results of replicate determinations reported for the benzo[a]pyrene (BAP) content of the cocoa butter test sample blue triangles: individual results of replicate determinations, blue box: reported expanded measurement uncertainty (k=2), blue horizontal line in blue box: average of replicate determinations, green dotted line: assigned value, green area around assigned value: expanded uncertainty of the assigned value (k=2), red lines: lower and upper limit of satisfactory z-score range 2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 Sample: Cocoa butter Measurand BAP on product basis No. of laboratories: 46 Limit of tolerance 6019 6018 6011 1023 6001 6015 1001 1028 6013 1012 1007 6002 6006 6008 1013 1011 1022 6021 6022 6012 6004 Assigned value: 0.860 µg/kg (Reference value) Target s.d.: 0.230 µg/kg (Reference value) Range of tolerance: 0.400 - 1.320 µg/kg (|Z Score|
Results reported by NRLs for the content of benzo[a]pyrene (BAP) in the cocoa butter test material. Assigned value is 0.86 µg/kg The uncertainty refers to the value for proficiency assessment. n.r.: not reported k.: coverage factor Rep.: result of replicate analysis 75
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Report on the 10 th inter-laborator
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Report on the 10 th inter-laborator
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1 Summary This report presents the
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3 Scope As specified in Regulation
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Table 3: List of participating Offi
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The stability of the test material
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8 Design of the proficiency test Th
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Figure 1 and Figure 2 provide overv
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Table 8: Compilation of z-scores ca
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Table 9: Compilation of z-scores ca
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Table 10: Compilation of z-scores c
Page 23 and 24: Table 11: Compilation of z-scores c
Page 29 and 30: 9.4 6Evaluation of compliance with
Page 31 and 32: 13 References 1 EU, COMMISSION REGU
Page 33 and 34: ANNEX 1: Announcement of the PT on
Page 36 and 37: Confirmation of participation 36
Page 38: ANNEX 4: Documents sent to particip
Page 43: GUIDANCE FOR REPORTING 43
Page 48 and 49: ANNEX 5: Technical specifications o
Page 50: ANNEX 6: Homogeneity of the test ma
Page 54: ANNEX 7: Questionnaire and method p
Page 58 and 59: continued: 58
Page 68 and 69: Method performance data reported by
Page 70 and 71: Method performance data reported by
Page 72 and 73: Results reported by NRLs for the co
Page 76 and 77: Results reported by OCLs for the co
Page 80 and 81: µg/kg Distribution of individual r
Page 84 and 85: Results reported by OCLs for the su
Page 98 and 99: Results reported by OCLs for the fa
Page 100: As the Commission’s in-house scie
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jrc79301_report%20eu-rl%20pahs%20pt%20on%20chocolate%202012_ver11

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