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NF T90-014 ; NF ISO 9297:2000-02-01
Water quality - Determination of chloride - Silver nitrate titration with chromate indicator (Mohr's method)
Edition
2000-02-01
NF T90-042-1 ; NF EN ISO 10304-1:2009-07-01
Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
Edition
2009-07-01
NF T90-436-1 ; NF ISO 15923-1:2014-01-25
Water quality - Determination of selected parameters by discrete analysis systems - Part 1: ammonium, nitrate, nitrite, chloride, orthophosphate, sulfate and silicate with photometric detection
Edition
2014-01-25
NF U42-142 ; NF EN 15476:2009-04-01
Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
Edition
2009-04-01
NF U42-144 ; NF EN 15558:2009-04-01
Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
Edition
2009-04-01
NF U42-145 ; NF EN 15559:2009-04-01
Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
Edition
2009-04-01
NF U42-146 ; NF EN 15560:2023-08-23
Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
Edition
2023-08-23
NF U42-147 ; NF EN 15561:2023-08-23
Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
Edition
2023-08-23
NF U42-149 ; NF EN 15604:2009-04-01
Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
Edition
2009-04-01
FD U42-408 ; FD CEN/TR 14539:2021-07-28
Straight ammonium nitrate fertilizers - Comparative study on the determination of porosity [oil retention]
Edition
2021-07-28