BS ISO 14637 : 2004 AMD 16903
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
MILK - DETERMINATION OF UREA CONTENT - ENZYMATIC METHOD USING DIFFERENCE IN PH (REFERENCE METHOD)
28-02-2007
23-11-2012
Foreword
1 Scope
2 Terms and definitions
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Preparation of test sample
8 Procedure
8.1 General
8.2 Blank determination
8.3 Calibration
8.4 Checking the calibration
8.5 Determination
8.6 Checking the stability
8.7 Checking the contamination of the electrodes
8.8 Cleaning procedure
9 Maintenance of the electrodes
9.1 Regeneration
9.2 Strong regeneration
10 Calculation and expression of results
10.1 Calculation
10.2 Expression of results
11 Precision
11.1 Interlaboratory tests
11.2 Repeatability
11.3 Reproducibility
12 Test report
Annex A (informative) Differential pH apparatus
Annex B (informative) Interlaboratory tests
Bibliography
Specifies an enzymatic method for the determination of the urea content of milk by measurement of the difference in pH.
| Committee |
AW/5
|
| DevelopmentNote |
Supersedes 02/704618 DC (11/2004) Renumbered and superseded by BS EN ISO 14637 (02/2007)
|
| DocumentType |
Standard
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 14637:2004 | Identical |
| ISO 5725-1:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions |
| ISO 707:2008 | Milk and milk products — Guidance on sampling |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
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