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BS EN ISO 22117:2019 – TC:2020 Edition

BS EN ISO 22117:2019 – TC:2020 Edition

$217.84

Tracked Changes. Microbiology of the food chain. Specific requirements and guidance for proficiency testing by interlaboratory comparison

Published By Publication Date Number of Pages
BSI 2020 89
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PDF Catalog

PDF Pages PDF Title
49 National foreword
51 European foreword
54 Foreword
55 Introduction
56 1 Scope
2 Normative references
3 Terms and definitions
57 4 Scheme design and purpose
4.1 General
4.2 Scheme objectives
58 4.3 Laboratory requirements for schemes
4.4 Choice of test matrices
4.5 Information on test methods used by the PT provider
4.6 Statistical design
59 5 Technical requirements and guidance for sample design and content
5.1 Sources, characterization and traceability of organisms
5.2 Target organisms level
60 5.3 Non-target organisms and interferences
5.4 Matrix selection and effects
61 6 Sample verification by the provider
6.1 General
6.2 Sample homogeneity testing — General considerations
6.3 Homogeneity testing for quantitative (enumeration) samples
62 6.4 Homogeneity testing for qualitative methods
63 6.5 Stability testing by the provider
6.5.1 General
6.5.2 Stability during storage conditions
6.5.3 Stability during transport conditions
64 7 Sample handling
7.1 General
7.2 Instructions to participants
8 Performance evaluations
8.1 General
8.2 Preliminary considerations
65 8.3 ​Assessment of quantitative methods
8.3.1 General
66 8.3.2 Distribution of data
67 8.3.3 Determining the assigned value
8.3.4 Uncertainty of the assigned value
8.3.5 Methods of assessing performance
8.3.6 Using z-scores
69 8.3.7 Other methods of performance evaluation
71 8.3.8 Long-term performance assessment
72 8.4 ​Assessment of qualitative methods
8.4.1 General
8.4.2 Performance of individual laboratories
74 8.4.3 Scheme comparisons of laboratory performance
76 Annex A (informative) Example of details to be included in a PT scheme plan
78 Annex B (informative) Preparation of fungal spore suspensions
79 Annex C (informative) Methods of testing for variation between portions of test materials
83 Annex D (informative) Example of a safety data sheet
85 Annex E (informative) A practical method to assess long-term performance of participants in PT schemes using enumeration methods
87 Bibliography

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BS EN ISO 22117:2019 - TC
$217.84