NEN NPR CEN/TS 15559 : 2007
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
FERTILIZERS - DETERMINATION OF NITRIC AND AMMONIACAL NITROGEN ACCORDING TO ULSCH
04-03-2009
12-01-2013
Defines a method for the determination of nitric and ammoniacal nitrogen with reduction according to Arnd (modified for each of the variants a, b and c). Applies to all nitrogenous fertilizers, including compound fertilizers, in which nitrogen is found exclusively in nitrate form, or in ammoniacal and nitrate form.
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