German technology
Humic Substances Based Products
Humintech GmbH
Am Pösenberg 9-13
D-41517 Grevenbroich

Telefon: +49 2181 70 676 - 0
Fax: +49 2181 70 676 - 22
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Leonardites are organic materials that have not reached the coal stage yet. They differ from lignite by its higher degree of oxidation in the coalification process (moor > peat > coal), a higher humic acid content and a higher number of carboxyl groups.

Commercial production of Leonardite has dramatically increased since the discovery of high levels of humic acid in the lignite coal bed. Leonardites are the result of a humification process that lasted up to 70 million years. Unlike other organic sources of humic acid, Leonardites are highly bioactive due to their molecular structure – up to five times more than common humus components. Thus, one kilogram of Leonardite corresponds to about five kilograms of other organic humic acid sources. Leonardite is not a fertilizer. It acts as soil conditioner, biocatalyst and biostimulant for plants. In comparison to other organic products, Leonardite particularly promotes plant growth (biomass production) and soil fertility.

Another advantage of Leonardite is its long-term effect. It is degraded more slowly than, for example, manure, compost or peat, because it contains more organic matter that is also more resistant to decomposers.


Humintech is a biotech company based in Grevenbroich, Germany. We are primarily focused on the research, development and industrial production of humic matter and humic acids for the agricultural sector.  Our products find further use in the feed, pharmaceutical and construction industry, in veterinary medicine and for ecological purposes such as water purification and soil decontamination.


Humintech GmbH

Am Pösenberg 9-13
41517 Grevenbroich / Deutschland 

Phone: +49 2181 70 676 - 0
Fax: +49 2181 70 676 - 22