What has changed in the RHP product certification scheme?


Every year the standards of the RHP quality mark for raw materials and growing media are updated. This is partly done based on developments in the field. Changes to the content of the RHP product certification scheme are introduced annually. As of 1 May the new requirements apply. What are the changes this year?

A list of the changes

The most important decisions of the Central Board of Experts are explained below. Certified companies need to have introduced all the current requirements from the RHP product certification scheme in their business operations and quality management system before 1 May.




Fen peat is approved for Mushroom applications.

470, 520, 530

Mixture tests have been cancelled for mineral products.


Harmonization heavy metal standards.

470, 530

Residue test M27 is added, if excavation from under agaric land.

330, 340,

405, 410,

415, 420,

430, 450,

490, 510,

570, 590,

700, 710,

715, 730,

731, 760

Expansion human pathogen analysis with Listeria.
M66 is to be M67.

405 t/m 760 (minus 610)

Addition to text storage counter samples with: “This place may not be accessible for unauthorized persons.”

View the current scheme at My RHP

Since 1 February 2023, the updated RHP product certification scheme can be downloaded from My RHP. The table of contents (MOD 000) indicates in red which modules have been changed. The adjusted text parts in modules are also marked in red.

Do you not have a personal account for My RHP yet? As an employee of an RHP certified company you can easily create one for yourself through my.rhp.nl.

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