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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LIQHUMUS® Liquid 18 Brochure   

LIQHUMUS® OMRI Certificate


LIQHUMUS® FiBL Certificate

LIQHUMUS® BCS Certificate

Number: EINECS - 271-030-1
Number: CAS - 68514-28-3

Reference number (REACH):


LIQHUMUS® Liquid 18 is a potassium humate suspension with bioactive humic and fulvic acids. It is a water soluble high quality plant growth stimulant and soil conditioner, and can be applied to all agricultural and horticultural plants by soil and foliar application. Furthermore, it is a permanent humic substance which cannot be easily decomposed by soil microorganisms. It can be used alone or mixed with most fertilizers.


LIQHUMUS® Liquid 18 is obtained through alkaline extraction from German Leonardite (highly oxidized lignite). It arises from the chemical and biological humification of plants and other organic matter, by biological activity and geological processes. Leonardite provides a very high content of humic and fulvic acids and natural, biologically active trace elements.  


Improved crop quality *  Enhanced nutrients uptake *  Better growth *  Stress resistance

LIQHUMUS® Liquid 18 is a bioactive growth stimulant and soil conditioner with humic acids, especially for sandy and heavy clay soils. It can be applied to all agricultural and horticultural plants. It can enhance the performance of fertilizers and reduce input costs.

  • Increases yield and improves the quality of plants
  • Improves the soil structure and the water retention capacity
  • Increases and stimulates beneficial soil microorganisms
  • Enhances the soil cation exchange capacity (CEC)
  • Increases the effectiveness of fertilizers and reduces nutrient leaching
  • Promotes root development
  • Increases nutrient uptake
  • Acts as a natural chelator for micronutrients in alkaline soils and increases their availability to plants
  • Decreases stresses due to drought and salinity and/or application of pesticides
  • Increases the germination of seeds and enhances development of radicles
  • Reduces the residues of herbicides and other toxic substances in soils
  • Delays the decomposition of ultraviolet unstable agents


In all crops
25-30 L/ha divided into several doses (5-10 L/ha) 

Vegetables in greenhouses 
35-45 L/ha divided into several doses (5-10 L/ha) during the season

Horticultural fruit trees
35-45 L/ha divided into several doses (5-10 L/ha) during the season

Open field vegetables
25-30 L/ha divided into several doses (5-10 L/ha) during the season

Cereals, potatoes, legumes
25-30 L/ha divided into several doses (5-10 L/ha) during the season

Ornamental plants and tree nursery, turf grass, landscaping (in general)
35-45 L/ha divided into several doses (5-10 L/ha) during the season or 5 L/m3 during the preparation of substrates

Foliar application
0.7-1.5 L/1000 L water every two weeks during the season

UV protection
0.5% (1 L/200 L water/ha)

* This recommendation may be varied according to the soil characteristics and local conditions.

INHERENT COMPOSITION  (Typical values on basis Fresh Matter)

Potassium - Humates

20 - 21 %

Total Humic Acids 1/2 

18 %

Humic Acid 1

14 %

Fulvic Acid 1

4 %

Potassium (K2O)

2.5 - 3 %

Dry Matter

22 - 23 %

Organic Substance

17 - 18 %

pH - value

9.5 - 10.5


1.12 kg/L

 Particle sizes

100 – 150 μm

1 according to ISO 19822 / HPTA / AAPFCO / IHSS Analysis method 
2 according to CDFA  18 % / Colorimetric method 20 %
“All Humintech humic substances based products are analysed according to the HPTA test method (ISO 19822:2018) to determine the content of humic and hydrophobic fulvic acids. Most suppliers are using the more simple “colorimetric” analysis method to determine the humic and fulvic acid contents, but experience shows that, due to its inaccuracy, this method indicates higher contents and is not suited to identify non humic substances such as lignosulphonates. In order to maintain the highest quality standard, Humintech has therefore decided to use the currently best analytical standard for the determination of humic and fulvic acids within the scope of quality control.”

Other options:

If you are looking for a highly concentrated water soluble Humic Acid POWHUMUS® WSG 85

Organic Soil Conditioner POWHUMUS® WSG 85 Find out more

If you are looking for a liquid Humic Acid with a high percentage of Fulvic Acid FULVAGRA® 25 Liquid

Highly Bioactive Growth Promoting  FULVAGRA® 25 Liquid Find out more

If you are looking for a high quality liquid native Humic Acid Suspension HS-300BIO

Organic Soil Conditioner HS-300BIO Find out more

If you are looking for a Granulated Natural Humic Acids PERLHUMUS® Granules

Organic Soil Conditioner  PERLHUMUS® Granules Find out more


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