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EN ISO 11905-1 : 1998

Current
Current

The latest, up-to-date edition.

WATER QUALITY - DETERMINATION OF NITROGEN - METHOD USING OXIDATIVE DIGESTION WITH PEROXODISULFATE
Published date

20-05-1998

Publisher

Comite Europeen de Normalisation

1 Scope
2 Normative references
3 Range of detection
4 Sensitivity
5 Principle
6 Reagents
7 Apparatus
8 Sampling and samples
9 Procedure
    9.1 Test portion
    9.2 Blank test
    9.3 Cleaning digestion vessels
    9.4 Digestion
    9.5 Verification of recovery of organic nitrogen
    9.6 Starting operation
    9.7 Initial sensitivity setting
    9.8 Calibration
    9.9 Determination
10 Expression of results
    10.1 Method of calculation
    10.2 Precision data
11 Test report

Defines a procedure for determining the nitrogen content in water, in the form of free ammonia, nitrite, nitrate and organic nitrogen compounds capable of converting to nitrate under the oxidative conditions described.

Committee
CEN/TC 230
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

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UNE-EN 12566-7:2017 Small wastewater treatment systems for up to 50 PT - Part 7: Prefabricated tertiary treatment units
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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
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods

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