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
E-Mail senden

HUMAGRA® NPK 10-0-3 + HUMIC ACIDS is a liquid, organic-mineral fertilizer based on potassium humate and plant-available nitrogen. It provides the crop with plant available nitrogen and potassium for high crop yields. Humic substances have a high cation exchange capacity and can release nutrients from the soil, making them available to plants. Humic substances, especially in sandy soils, form the very basis for sustainable and efficient nutrient absorption by the plant.

HUMAGRA® NPK 10-0-3 + HUMIC ACIDS can be applied using fertigation, hydroponic and sprinkler systems as well as conventional foliar sprays.


  • Promotes deep and dense root growth 
  • Increases the tolerance of plants against abiotic stress (drought, salt stress, cold and heat)
  • Increases the buffering and cation exchange capacity (CEC) of soils 
  • Strengthens early plant development and facilitates full growth potential 
  • Provides readily available nitrogen and potassium to the plant and prevents nitrate leaching
  • Increases fertilizer use efficiency


  • Agriculture
  • Vegetable Production
  • Fruit Production
  • Substrate Cultivation
  • Hydroponics
  • Turf and Landscaping
  • Seed Treatment


25 - 30 L/ha kg/ha divided into several applications (5 - 10 L kg/ha) during the vegetation period

75 - 150 ml/100 L water every two weeks during the vegetation period

1 - 5 L/m³

0.3 % or 300 ml/100 kg seed dressing according to thousand grain weight (T.G.W.)

30 - 50 ml/1000 L nutrient solution during the cultivation cycle 

* These are standard recommendations that can vary according to soil properties, cultivated crop and local system conditions.

INHERENT COMPOSITION  (Typical values based on Fresh Matter)

Potassium - Humates

18 %

Total Humic Acids 1/2

16 %

Humic Acid 1

14 %

Fulvic Acid 1

2 %

Potassium (K2O)

2 - 3 %

Dry Matter

22 - 23 %

Organic Substance

18 - 20 %

pH - value

9 - 11

Total Nitrogen

10 %

Water soluble Nitrogen

9 %


1.12 kg/L

1 according to ISO 19822 / HPTA / AAPFCO / IHSS Analysis method 
2 according to CDFA  16 % / Colorimetric method 18 -  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.”


Store in a dry place, protected from frost, heat and direct sunlight. Store out of the reach of children!

Delivery specs

1 L

5/10/20 L



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 pharmaceutical, construction industry, 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


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