Ferm O Feed is also RAG certified for Green Roof Substrate.
The RAG certificate provides the greatest possible security, as both the product and the process in the chain are monitored. The RAG quality mark guarantees the quality of the product in the chain, from raw material extraction to processing and delivery. All products that are RAG certified are free of weeds and meet maximum salt content. In addition, they are guaranteed free of the most common quarantine diseases.
Click here to view the RAG certificate.
Click here for more information about Green Roof Substrates.