Biolit+em / diabas - powder/sand/ultra-fine

BioLit Ultra Fine is a very fine powder form (90% < 10 mu) of the product BioLit.
Because of its fine form, this product can be suspended in water through continuous stirring and the product can be used as a foliar fertiliser. As a foliar fertiliser it has the following functions: on the one hand both trace elements and silicon can be absorbed into the leaf, creating a tougher leaf epidermis. This makes it more difficult for sucking insects to penetrate the leaf and they therefore avoid the crop.

It can also be absorbed through the pores into the sap flow, the product therefore has a positive effect on the plant's strength, making it more resistant to disease. Finally, it can produce a layer of fine powder on the leaf, which can damage the skin of crawling insects, making them less likely to spread and making it harder for fungi to attach to the leaf.
BioLit is registered with SKAL.

ProductBiolit Ultra Fine +EM
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.

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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