Standardized Fulvic Test gets ISO Blessing
The release last month from the International Org. for Standardization (ISO) has taken the accuracy of testing for the fulvic fraction of humic acids to a higher level and cast it into the world- wide arena by issuing #ISO 19822:2018(E) Test Method for determination of Humic Acids and Hydrophobic Fulvic Acids. Background In 2014 the IHSS (Int’l Humic Substances Society) developed a new standardized method for determination of HA and FA contents in raw humate ores and in solid
