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BS EN ISO 6887-1:2017 – TC:2020 Edition

BS EN ISO 6887-1:2017 – TC:2020 Edition

$217.84

Tracked Changes. Microbiology of the food chain. Preparation of test samples, initial suspension and decimal dilutions for microbiological examination – General rules for the preparation of the initial suspension and decimal dilutions

Published By Publication Date Number of Pages
BSI 2020 72
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PDF Catalog

PDF Pages PDF Title
38 National foreword
40 European foreword
Endorsement notice
42 Foreword
43 Introduction
45 1 Scope
2 Normative references
3 Terms and definitions
47 4 Principle
5 Diluents
5.1 Basic materials
5.2 Diluents for general use
5.2.1 Peptone salt solution
48 5.2.2 Buffered peptone water
5.2.3 Double-strength buffered peptone water
5.3 Diluents for special purposes
5.4 Distribution and sterilization of the diluent
49 5.5 Performance testing for diluents
6 Apparatus
50 7 Sampling
8 Preparation of samples
8.1 General
51 8.2 Frozen products
8.2.1 General
8.2.2 Small samples defrosted before testing
8.2.3 Large pieces or blocks sampled while frozen
52 8.3 Hard and dry products
8.4 Dehydrated and other low-moisture products
8.5 Liquid and non-viscous products
8.6 Acidic products
53 8.7 High-fat (over 20 %) foods
8.8 Multi-component products
8.9 Packaged products
54 8.10 Surface samples (swabs and other devices)
9 Specific procedures
9.1 Test portion and initial suspension (primary dilution)
55 9.2 Duration of the procedure
9.3 Pooling and compositing procedures for qualitative tests
10 Further dilutions
10.1 Decimal dilution series
56 10.2 Other dilution series
57 Annex A (informative) Illustrations of pooling and compositing procedures
62 Annex B (informative) Method for sampling frozen test pieces or blocks
64 Annex C (informative) Data showing reliability of test results according to size of test portions
67 Annex D (informative) Verification protocol for pooling samples for qualitative tests
70 Bibliography

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BS EN ISO 6887-1:2017 - TC
$217.84