This standard BS EN 15558:2009 Fertilizers. Determination of nitric and ammoniacal nitrogen according to Ulsch is classified in these ICS categories:
65.080 Fertilizers
This European Standard specifies a method for the determination of nitrate and ammoniacal nitrogen with reduction according to Ulsch. The method is applicable to all nitrogenous fertilizers, including compound fertilizers, in which nitrogen is found exclusively in nitrate form, or in ammoniacal and nitrate form.
