NEN EN 15558 : 2009
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FERTILIZERS - DETERMINATION OF NITRIC AND AMMONIACAL NITROGEN ACCORDING TO ULSCH
Published date
01-12-2013
Publisher
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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