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 high quality natural humic acid soil conditioner and chelator based on German Leonardite

PERLHUMUS® Granules consists of immediately available nutrient humus and a high quantity of permanent humus, which is stable against microbial decomposition in the soil, contributing to long term increases in soil fertility.

The special advantages of PERLHUMUS® Granules as a soil conditioner are its positive influence on plant growth and the improved resistance of plants against stress factors (drought, salinity, and pesticides). It increases the soil cation exchange capacity and soil buffering capacity as well as the soil water holding capacity. 

The positive effect of PERLHUMUS® Granules on soil life, soil structure and the rhizosphere can be seen after the first application. PERLHUMUS® Granules can be used in a wide variety of applications and should be applied to the ground using non-hygroscopic equipment.


  • Provides stable humus to the soil and stimulates CO2 sequestration
  • Improves the soil structure and aeration of the soil, especially in sandy and clay soils
  • Increases availability of soil nutrients and improves soil water holding capacity 
  • Improves the buffering capacity of soils, neutralizing pH
  • Increases fertilizer efficiency and plant productivity
  • Helps to neutralize toxins and sequesters heavy metals in the soil
  • Promotes root respiration and development, especially vertically


  • Agriculture
  • Vegetable Production
  • Fruit Production
  • Turf and Landscaping


400 - 600 kg/ha during seed bed and general soil preparation 

1 - 15 kg/m³ in organic or mineral substrates

10 - 15 kg/100 m² during planting, seed bed preparation and lawn care

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 based on Dry Matter)

Humic Substances 1

60 %

Total Humic Acids 1

38 - 39 %

Free Humic Acid 1

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

Delivery specs

Carton Box
1 kg

20 kg

Filling line PERLHUMUS 20 kg

Source: report on application Perlhumus by Michael Mai (Solid Green)

Source: report on application Perlhumus by Andreas Krauss (

Source: report II on application Perlhumus by Michael Mai (Solid Green)

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® Liquid 25

Highly Bioactive Growth Promoting  FULVAGRA® Liquid 25 Find out more


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

Organic Soil Conditioner HS®-300BIO BASIC 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 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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