Table of Contents

European foreword<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Principle<br>5 Interferences<br>6 Apparatus<br>7 Reagents<br>8 Procedure<br>9 Calculation of the heptagluconic acid content<br>&nbsp;&nbsp;and expression of the results<br>10 Precision<br>11 Test report<br>Annex A (informative) - Chromatograms of the standard<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and a typical sample solution<br>Annex B (informative) - Absorption spectra of the HGA<br>Annex C (informative) - Calculation of the molar ratio<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;HGA:Metal<br>Annex D (informative) - Statistical results of the inter-<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;laboratory test<br>Annex E (informative) - Complete names of chelating agents<br>Bibliography

Abstract

Gives a chromatographic method which allows the identification of heptagluconic acid (HGA) in fertilizers containing heptagluconic acid metal complexes.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	British Standards Institution
Pages
ISBN
Committee	CII/37
Supersedes	15/30317854 DC : 0