THE CERTIFICATION OF THE CONTENTS OF CALCIUM, AMMONIACAL NITROGEN, NITRATE NITROGEN AND TOTAL NITROGEN IN A SAMPLE OF CALCIUM AMMONIUM NITRATE FERTILISER
The report describes the preparation of two reference materials for the analysis of nitrogen containing fertilizers : - a commercial product of calcium ammonium nitrate (CRM 178); - a commercial product of urea (CRM 179). The calcium ammonium nitrate (CRM 178) is certified for the following contents (expressed as mass fractions): calcium, ammoniacal and nitrate nitrogen and total nitrogen. The urea (CRM 179) is certified for the following contents (expressed as mass fractions): uric nitrogen, biuret and total nitrogen. The analyses were performed by laboratories experienced in fertiliser analysis. The majority of the analyses were carried out by several methods selected for their ability to produce the most accurate results. The results are shown in detail and discussed. The report also explains the methodology followed to assign the uncertainties to the respective values.
Bibliographic Reference: EUR 10166 EN (1985) MF, 62 P., BFR 150, BLOW-UP COPY BFR 310, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989124001200 / Last updated on: 1987-01-01
Available languages: en