EN ISO 8968-3:2007
Current
The latest, up-to-date edition.
Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method) (ISO 8968-3:2004)
20-06-2007
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Preparation of test sample
9 Procedure
9.1 Test portion and pretreatment
9.2 Determination
9.3 Blank test
9.4 Recovery tests
10 Calculation and expression of results
10.1 Calculation of nitrogen content
11 Precision
12 Test report
Annex A (informative) Results of interlaboratory test
Annex B (informative) Modified procedure for analysis
of other milk products
Bibliography
ISO 8968-3|IDF 20-3:2004 specifies a method for the determination of the nitrogen content of liquid, whole or skimmed milk.It concerns a semi-micro rapid routine method following the block-digestion principle.
| Committee |
CEN/TC 302
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| BS EN ISO 8968-3:2007 | Identical |
| UNI EN ISO 8968-3 : 2008 | Identical |
| UNE-EN ISO 8968-3:2007 | Identical |
| NEN EN ISO 8968-3 : 2007 | Identical |
| PN EN ISO 8968-3 : 2008 | Identical |
| NBN EN ISO 8968-3 : 2007 COR 2012 | Identical |
| ISO 8968-3:2004 | Identical |
| SN EN ISO 8968-3:2007 | Identical |
| SN EN ISO 8968-3 : 2007 CORR 2012 | Identical |
| SS-EN ISO 8968-3:2007 | Identical |
| NS EN ISO 8968-3 : 2007 AC 2012 | Identical |
| I.S. EN ISO 8968-3:2007 | Identical |
| NF EN ISO 8968-3 : 2007 | Identical |
| DIN EN ISO 8968-3:2007-09 | Identical |
| ISO 8968-1:2014 | Milk and milk products — Determination of nitrogen content — Part 1: Kjeldahl principle and crude protein calculation |
| ISO 5725-1:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions |
| ISO 385:2005 | Laboratory glassware — Burettes |
| ISO 707:2008 | Milk and milk products — Guidance on sampling |
| ISO 8968-2:2001 | Milk Determination of nitrogen content Part 2: Block-digestion method (Macro method) |
| 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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