RAL – quality markReliabilityCriteriaProcedureAdvantagesRALConsumer protectionMembershipFAQAbout ussuppliers – of productsabout – quality criteriaBark productspotting soilGrowing MediaExpanded Claygrowing media constituentswood fibrescoirperlitepeatSubstrates for green roofsSubstrates for tree plantingabout – calls for tenderBark humusBark mulchSubstrates for green roofsSubstrates for tree planting Proof of RAL quality assurance for bulk/unpackaged shipments Download Proof of RAL quality assurance for bulk/unpackaged shipments
ContactFAQAbout usSearch Memberarea English Deutsch Substrates for tree planting RAL quality mark advantages – Calls for tender – Substrates for tree planting If you want to make sure bidders actually offer RAL-certified products, you should choose to use the following wording in your invitations for tender: Tips for tendering – RAL-certified substrates for tree planting Substrate type: Substrate for tree planting for planting hole type 1 – open, non-covered planting holes carrying the quality mark RAL GZ 250/7-1 Substrate for tree planting for planting hole type 2 – covered, load-bearing planting holes carrying the quality mark RAL GZ 250/7-2 The supplier must provide evidence of the relevant quality mark RAL-GZ 250/7.
