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


PERLHUMUS® Granules is a granulated soil conditioner based on Leonardit. Derived from German sources, it contains high-quality and highly bio-active humic substances that directly contribute to the formation of stable humus in soils. Humic substances are dead residues of plants and microorganisms that have been humidified and transformed over millions of years. Humified organic substance increases the fertility of soils continuously over time and further yield positive effects on soil life and soil fertility parameters already after the first application. 

PERLHUMUS® Granules improve plant growth conditions of soils in various application schemes. It can be applied together with non-hygroscopic agents into the soil.


  • Provides stable humus to the soil and stimulates CO2 sequestration
  • Improves the soil structure and soil air balance, especially in sandy and clayey soils
  • Increases nutrient and water retention
  • Improves the buffering capacity of soils, to neutralize pH values on slightly acidic to neutral levels
  • Activates soil life and sets important material cycles in motion
  • Increases fertilizer efficiency and area productivity


  • Agriculture
  • Vegetable Production
  • Fruit Production
  • Lawn Care and Landscaping


  • Soil
    400-600 kg/ha during seed bed and general soil preparation 
  • Substrates
    1-15 kg/m³ in organic or mineral substrates
  • Landscaping
    10-15 /100 m² during planting, seed bed preparation and lawn care
  • Orchards
    0.5-2 kg/ planting hole or 10-15 kg/100 m² together with the first fertilizer application evenly over the tree shade area

*These are standard-recommendations that can vary according to soil properties, plant cultivate and local system conditions.

INHERENT COMPOSITION (Typical values on basis Dry Matter)

Humic Substances 1

60 %

Total Humic Acids 1

46 - 50 %

Free Humic Acid 2

34 %

Hydrophobic Fulvic Acid 2

4 - 5 %

Dry Matter

68 - 72 %

Organic Substance

< 80 %

pH - value

5 - 6

Bulk Density

0.6 - 0.7 kg/L

Particle size

1 - 6 mm

1 according to ISO 5073
2 according to 19822 / HPTA / AAPFCO / IHSS Analysis method

“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, from frost, heat and direct sunlight protected place. Store out of children's reach!

Form of Delivery

15/20/25 kg

Big bag

Source: report on application Perlhumus by Andreas Krauss (

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 Potassium Humate 18% LIQHUMUS® Liquid 18

Organic Soil Conditioner LIQHUMUS® Liquid 18 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


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