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Humic Materials Analysis

Humic substances are measured in natural organic materials such as soil, peat, leonardite, and natural organic matter (NOM) isolated water fractions. These can be classified into three primary general categories: Humic Acids, Fulvic Acids, and Humin. By selective acid-base solubility separations, the individual fractions can be isolated and quantified by analysis of carbon content.

The “California Method” uses a similar acid-base separation, but quantifies Humic Acid gravimetrically, after sophisticated washing and correction for other fractions. These analyses have been utilized extensively on a commercial basis for qualification of Humic and Fulvic Acid-enhanced fertilizers and other agricultural and biological supplements and amendment products.

In addition, the DOC (dissolved organic carbon) fractionation methods developed by Huffman Labs and the USGS can be used to distinguish acid-base and ion exchange separable organic fractions in natural waters, even at very low levels. Please inquire as to which of these analyses might best suit your requirements.


Humic Acid and Fulvic Acid (as carbon) $140.00
Humic Acid, Fulvic Acid and Humin (as carbon) $165.00
Humic Acid (California Method) $150.00


Prices shown are “per sample”, and may be subject to MIMINUM CHARGES and/or DISCOUNT PRICING. See the GETTING STARTED web page for more information.






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