Zeolite-actionine is formed by a volcanic deposit of minerals in a humid region. When volcanic ash enters water, it cools down quickly and a porous crystal structure is formed. Because of the large number of angles in the structure, the product has a high cation exchange capacity (CEC value). This high CEC value ensures that fertilisers are retained in the soil for longer, and can therefore be absorbed by the plant at a later stage. This results in reduced leaching of fertilisers, but also better utilisation of fertilisers in the period (e.g. around flowering or fruiting). The product can also be used to bind harmful substances, resulting in better absorption of other substances.

On highly permeable soils, Zeolite-actionine has a very good effect on plant growth, without significant fertiliser loss. Examples are dry sandy soils, but also sports fields and golf courses.

FormPowder / Granulate
Moisture binding++
Ion exchanger ++++
Soil improver ++
Nutrient supplier+

Poortershaven: Know-how

Poortershaven continuously develops new applications for the use of clay and rock minerals in the agricultural sector. This has resulted in well-known and frequently used products for animal health, soil improvement and animal bedding hygiene.

The colour of the products may differ in real life, due to the sharpness and screen settings. If desired, we would be happy to send a sample.

Broad product portfolio

Poortershaven offers a wide range of products. This means that within a product range you will always find a form that suits the intended use and/or technical installation.

Continuously innovating

We collaborate with universities and research institutes, among others, to test our products and their applications and to generate knowledge about optimal use.

Product knowledge

Through long-term relationships with our suppliers, we supply reliable and stable products. Along with our suppliers, we have a lot of in-house specialist product knowledge.


We know our products and would be happy to get in touch with you. We are happy to share our knowledge about our products with you, enabling us to jointly find an appropriate solution for your problem.


If you have any questions about our range, prices or current stock, if you would like advice, or if you would simply like to touch base with us, please contact us.

We look forward to assisting you.

Obtain immediate adviceObtain immediate adviceand personal

For more information and current prices, please feel free to contact one of our employees.

Call +31(0)10 4365755 or mail info@poortershaven.nl