Bentonite 1m558 - Absorben

Bentonite is a clay mineral (not a rock) and is registered as a technological additive (1m558) under the subgroup binders. The quality and application of this product is determined by the smectite content (70% or 50%). Smectites have a platelet structure, which ensures high moisture binding and swelling capacity. Significant cation exchange also takes place between these platelets, therefore our sodium bentonites work particularly well as a binder of (undesirable) substances. Poortershaven regularly has its bentonites examined by the university for their binding capacity for both mycotoxins and endotoxins. Our bentonites are all sodium bentonites. The high moisture absorption capacity makes the product an excellent improver of manure consistency and has a positive effect on intestinal health.

Poortershaven has various bentonites in its range. This bentonite (50% smectite) is used for both technological and animal physiological purposes. It is used as a pellet binder and moisture binder. The clay mineral also has a retarding effect on digestion, resulting in more solid manure which is easier to pick up. As this bentonite binds undesirable substances (in particular Aflatoxin), the product has a positive effect on the overall health and performance of pets. An older study shows that bentonite through food has a positive effect on the shine of the coat/contributes positively to a shiny coat. 

TypeAbsorben (natural)
Registration number1m558
Pellet binder+
Taste enhancer-
Gastrointestinal retarder++
Free-flowing agent+
Toxin control+++
NH4+ binding+
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.

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

Call +31(0)10 4365755 or mail