Name: UNI CEN/TS 16490 : 2013
Brand: UNI

FERTILIZERS - COMPARISON OF THE CEN/TC 260/WG 7 RING TEST RESULTS WITH TOLERANCES GIVEN IN THE REGULATION (EC) NR 2003/2003 ANNEX 2 AND CONCLUSIONS

Published date

05-16-2013

Publisher

Ente Nazionale Italiano di Unificazione (UNI)

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Statistical method validation
5 Conclusions
Annex A (informative) - Statistical data of the
inter-laboratory tests and findings
Annex B (informative) - Refined statistical evaluation
Bibliography

Defines to what extent the presently applied tolerances are in line with the obtained precision data from the analytical methods studied.

DocumentType	Technical Specification
PublisherName	Ente Nazionale Italiano di Unificazione (UNI)
Status	Current

Standards	Relationship
CEN/TS 16490:2013	Identical

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
EN 15477:2009	Fertilizers - Determination of the water-soluble potassium content
EN 16197:2012	Fertilizers - Determination of magnesium by atomic absorption spectrometry
EN 16198:2012	Fertilizers - Determination of magnesium by complexometry
EN 15956:2011	Fertilizers - Extraction of phosphorus soluble in mineral acids
EN 15750:2009	Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN 16199:2012	Fertilizers - Determination of the sodium extracted by flame-emission spectrometry
EN 15479:2009	Fertilizers - Spectrophotometric determination of biuret in urea
EN 15478:2009	Fertilizers - Determination of total nitrogen in urea
EN 15926:2011	Fertilizers - Extraction of water soluble sulfur where the sulfur is in various forms
EN 15925:2011	Fertilizers - Extraction of total sulfur present in various forms
EN 16195:2012	Fertilizers - Determination of chlorides in the absence of organic material
EN 16196:2012	Fertilizers - Manganimetric determination of extracted calcium following precipitation in the form of oxalate
EN 15958:2011	Fertilizers - Extraction of water soluble phosphorus
EN 15960:2011	Fertilizers - Extraction of total calcium, total magnesium, total sodium and total sulfur in the forms of sulfates
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
EN 15961:2017	Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates
EN 15475:2009	Fertilizers - Determination of ammoniacal nitrogen
ISO 5315:1984	Fertilizers — Determination of total nitrogen content — Titrimetric method after distillation
EN 15957:2011	Fertilizers - Extraction of phosphorus which is soluble in neutral ammonium citrate
EN 15476:2009	Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
EN 15749:2009	Fertilizers - Determination of sulfates content using three different methods