90.93 Standard confirmed Oct 22, 2021
ISO
ISO/TC 190/SC 3 Chemical and physical characterization
International Standard
13.080.10 Chemical characteristics of soils
Specifies an extraction method and analytical conditions to determine the content of soil phosphorus soluble in sodium hydrogen carbonate solution. Lays down colour development at room temperature and after heating to a high temperature. Applicable to all types of soils.
PUBLISHED
ISO 11263:1994
90.93
Standard confirmed
Oct 22, 2021