ISO 20541:2008
Milk and milk products - Determination of nitrate content - Method by enzymatic reduction and molecular-absorption spectrometry after Griess reaction
- Standard No.
- ISO 20541:2008
- Release Date
- 2008
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 20541:2008
- Scope
- This International Standard specifies a method for the determination of the nitrate content of milk and milk products by molecular-absorption spectrometry after Griess reaction (preceded by enzymatic reduction). The method is, in particular, applicable to whole, partly skimmed, skimmed and dried milk, hard, semi-hard and soft cheeses, processed cheese, whey cheese, caseins, caseinates, dried whey and milk protein concentrates. The method can be used at contents corresponding to a measured concentration in the sample solution (with blank subtracted) of more than 0,2 mg/l.
ISO 20541:2008 Referenced Document
- ISO 1042 Laboratory glassware - One-mark volumetric flasks
- ISO 3696 Water for analytical laboratory use; Specification and test methods
- ISO 565 Test sieves; metal wire cloth, perforated metal plate and electroformed sheet; nominal sizes of openings
- ISO 648 Laboratory glassware - Single-volume pipettes*， 2008-10-01 Update
- ISO 835 Laboratory glassware - Graduated pipettes
ISO 20541:2008 history
- 2008 ISO 20541:2008 Milk and milk products - Determination of nitrate content - Method by enzymatic reduction and molecular-absorption spectrometry after Griess reaction
