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EVS-EN 13342:2001

Characterisation of sludges - Determination of Kjeldahl nitrogen

General information

Valid from 01.02.2001
Base Documents
EN 13342:2000
Directives or regulations
None

Standard history

Status
Date
Type
Name
01.02.2001
Main
This standard describes a procedure for the determination of  Kjeldahl Nitrogen  in sludge and sludge products. The digestion is catalysed by selenium or copper, the temperature being raised by a high consentration of sodium sulphate.
Although wet samples are normally taken for analysis, it is recognised practice to report results on a dry mass basis (g/kg). Consequently, it is also necessary to determine the dry residue of the homogenised sample for analysis (see EN 12880).

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