DIN 38409-28:1992-04
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
GERMAN STANDARD METHODS FOR THE EXAMINATION OF WATER, WASTE WATER AND SLUDGE; PARAMETERS CHARACTERIZING EFFECTS AND SUBSTANCES (GROUP H); DETERMINATION OF BOUND NITROGEN AFTER REDUCTION WITH DEVARDA'S ALLOY AND CATALYTIC DIGESTION (H 28)
Hardcopy , PDF
01-01-2008
English
12-01-2013
Determines nitrogen present in water in the form of organic nitrogen compounds, nitrate, nitrite and ammonia, in concentrations by mass ranging from 10 1) to 200 mg/l. For lower concentrations, the sample pre-treatment and distillation procedure may be adopted, but the determination shall be carried out photometrically, using method DIN 38406 E 5-1. Higher concentrations may be determined by reducing the sample volume.
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