BS ISO 14461-1:2005
Current
The latest, up-to-date edition.
Milk and milk products. Quality control in microbiological laboratories Analyst performance assessment for colony counts
Hardcopy , PDF
English
13-09-2005
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Diluent, culture media and reagents
6 Apparatus and glassware
7 Sampling
8 Preparation of test sample
8.1 Milk
8.2 Dried milk
9 Procedure
9.1 General
9.2 Number of decimal dilution steps
9.3 Preparation of first decimal dilution
9.4 Preparation of further decimal dilutions
9.5 Melting the medium
9.6 Preparation of binary dilutions and inoculation of
the medium
9.7 Incubation
9.8 Randomization and counting of colonies
10 Statistical evaluation
10.1 Adequacy of the data set
10.2 Evaluation of the complete data set
Annex A (informative) Weighted mean and homogeneity
testing of colony counts
Annex B (Informative) BASIC programme for calculating
the likelihood ratio index G[2]
Bibliography
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