90.92 Standard to be revised Jun 19, 2023
ISO
ISO/TC 134 Fertilizers, soil conditioners and beneficial substances
International Standard
65.080 Fertilizers
Published
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
90.92
Standard to be revised
Jun 19, 2023
IN_DEVELOPMENT
ISO 19822:2018/CD Amd 1