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BS EN ISO 14673-1:2004

Current
Current

The latest, up-to-date edition.

Milk and milk products. Determination of nitrate and nitrite contents Method using cadmium reduction and spectrometry
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

18-03-2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Preparation of test sample
   8.1 Dried milk and dried whey
   8.2 Caseins and caseinates
   8.3 Cheese
   8.4 Whey cheese
9 Procedure
   9.1 Preparation of the copperized cadmium
       column
   9.2 Checking the reducing capacity of the
       column
   9.3 Regeneration of the column
   9.4 Preparation of test portion
   9.5 Extraction and deproteination
   9.6 Reduction of nitrate to nitrite
   9.7 Blank test
   9.8 Determination
   9.9 Preparation of calibration graph
10 Calculation and expression of results
   10.1 Nitrite content
   10.2 Nitrate content
11 Precision
   11.1 General
   11.2 Repeatability
12 Test report
Bibliography

Gives a method for the determination of the nitrate and nitrite contents of milk and milk products by cadmium reduction and spectrometry. Applicable to whole and partly skimmed and skimmed dried milk, hard, semi-hard and soft cheeses, processed cheese and whey cheese, caseins and caseinates and dried whey.

Committee
AW/5
DevelopmentNote
Supersedes 99/702866 DC (12/2001)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current
Supersedes

ISO 707:2008 Milk and milk products — Guidance on sampling
ISO 1042:1998 Laboratory glassware One-mark volumetric flasks
ISO 648:2008 Laboratory glassware — Single-volume pipettes
ISO 565:1990 Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings
ISO 835-1:1981 Laboratory glassware Graduated pipettes Part 1: General requirements

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