NEN NPR CEN/TS 15558 : 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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 nitrate and ammoniacal nitrogen with reduction according to Ulsch. 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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