90.93 Standard confirmed Feb 16, 2024
ISO
ISO/TC 190/SC 3 Chemical and physical characterization
International Standard
13.080.20 Physical properties of soils
This document specifies a method for the determination of cation exchange capacity (CEC) and the content of exchangeable cations (Al, Ca, Fe, K, Mg Mn, Na) in soils using a hexamminecobalt(III)chloride solution as extractant. For soils containing calcium carbonate a calcite saturated hexamminecobalt(III)chloride solution is specified particularly for determination of exchangeable Ca. This document is applicable to all types of air-dry soil samples which have been prepared according to ISO 11464.
WITHDRAWN
ISO 23470:2007
PUBLISHED
ISO 23470:2018
90.93
Standard confirmed
Feb 16, 2024