90.20 Standard under periodical review Jan 15, 2025
ISO
ISO/TC 134 Fertilizers, soil conditioners and beneficial substances
International Standard
65.080 Fertilizers
This document specifies the procedure for the analysis of humic acids and hydrophobic fulvic acids which is applicable to dry and liquid materials used as ingredients in commercial fertilizers, soil amendments, and geological deposits.
PUBLISHED
ISO 19822:2018
90.20
Standard under periodical review
Jan 15, 2025
IN_DEVELOPMENT
ISO 19822:2018/CD Amd 1.2