BSI PD ISO/TS 20917:2023

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Fertilizers, soil conditioners and beneficial substances. Determination of ammonium citrate, disodium-EDTA soluble phosphorus and potassium by ICP-OES in inorganic fertilizers

Published By	Publication Date	Number of Pages
BSI	2023	36

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Description

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PDF Pages	PDF Title
2	undefined
6	Foreword
7	Introduction
9	1 Scope 2 Normative references 3 Terms and definitions 4 Principle
10	5 Reagents
11	6 Apparatus
12	7 Sampling and sample preparation 8 Procedure 8.1 Extraction of P and K 8.2 Instrument conditions
13	8.3 Preparation of standards 8.3.1 Standards from reagent salts 8.3.2 Standards from commercial stock solutions
15	8.3.3 Calibration and wavelength splitting 8.3.4 Analysis 8.4 Quality control 8.4.1 Reference material 8.4.2 Duplicates 9 Calculations and expression of results 9.1 Calculations
16	9.2 Precision 9.2.1 General
17	9.2.2 Repeatability, r 9.2.3 Reproducibility, R
18	10 Test report
19	Annex A (informative) Ring test background and results
32	Annex B (informative) Critical factors
34	Bibliography

Additional information

Status	Definitive
Pages	36
Publication Date	2023-08-09
ISBN	978 0 580 92918 2
Standard Number	PD ISO/TS 20917:2023
Title	Fertilizers, soil conditioners and beneficial substances. Determination of ammonium citrate, disodium-EDTA soluble phosphorus and potassium by ICP-OES in inorganic fertilizers
Identical National Standard Of	ISO 20917
Descriptors	Phosphorus inorganic compounds, Ammonium inorganic compounds, Agricultural equipment, Agricultural materials, Fertilizer distributors, Soil improvement
Publisher	BSI
Committee	CII/37
ICS Codes	65.080 - Fertilizers

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BSI PD ISO/TS 20917:2023

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