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AS 2300.1.8-2008
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Methods of chemical and physical testing for the dairying industry, Method 1.8: General methods and principles — Assessment of instrumental methods — Protein in milk and infrared spectrometric analysis of milk
This Standard describes a procedure to assess the capabilities of instrumental methods with accepted standard chemical methods.
Table of contents
Header
About this publication
Preface
Foreword
1 Scope and general
1.1 Scope
1.2 Referenced documents
1.3 Accuracy uncertainty of measurement
2 Protein in milk
2.1 Scope
2.2 Application
2.3 Definitions
2.4 Principle
2.5 Test samples
2.6 Comparison of instrument with reference method
2.6.1 General
2.6.2 Instrument performance checks
2.6.3 Instrument calibration
2.6.4 Comparative analyses
2.7 Calculations
2.7.1 Mean difference
2.7.2 Standard deviation
2.8 Criteria for acceptability of an instrument
2.9 Report
2.10 Bibliography
3 Infrared spectrometric analysis of milk
3.1 Scope
3.2 Principle
3.3 Factors affecting the accuracy of analyses
3.3.1 Instrumental factors
3.3.1.1 Linearity
3.3.1.2 Purging efficiency
3.3.1.3 Homogenization
3.3.1.4 Water vapour within the instrument
3.3.2 Physical, chemical and biological factors
3.3.2.1 Interaction of milk components
3.3.2.2 Fatty acid composition
3.3.2.3 Lipolysis
3.4 Calibration of the instrument
3.4.1 General
3.4.2 Calibration check and adjustment
3.5 Performance tests
3.5.1 Test procedure
3.5.2 Calculations
3.5.2.1 Mean difference between instrument and reference values
3.5.2.2 Standard deviation of the difference between instrument and reference values
3.5.2.3 Mean difference between duplicate instrument results
3.5.2.4 Standard deviation of difference between duplicate instrument results
3.6 Performance specifications
3.6.1 General
3.6.2 Mean difference between instrument and reference values
3.6.3 Standard deviation of the difference between instrument and reference values
3.6.4 Mean difference between duplicate instrument results
3.6.5 Standard deviation of the difference between duplicate instrument results
3.7 Test report
Appendix A
A1 Repeatability
A2 Purging efficiency
Cited references in this standard
Content history
[Superseded]
[Superseded]
DR 07344
AS 2300.1.8-2008 REC:2019
Please select a variation to view its description.
| Published | 26/08/2008 |
|---|---|
| Pages | 12 |
Please select a variation to view its pdf.
