RAL quality marks facilitate public calls for tender

  • Reliable criteria for bidder eligibility
  • State-of-the-art specifications
  • Specifications exceeding standard and legal requirements
  • Shortened tender process
  • No in-depth assessment of bids required
  • Reliable contractors and clear specifications

Contracting parties benefit from these advantages if they acknowledge the RAL quality mark as a proof of bidder eligibility and compliance with technical specifications in their calls for tender.
The reason is the strict Quality and Testing Regulations products and services must comply with in order to be awarded the RAL quality mark. The Regulations cover all relevant properties, including the manufacturer’s reliability and efficiency and the product’s technical and performance standards.

The RAL quality mark proves that these requirements are met consistently. If contracting parties base their calls for tender on the Quality and Testing Regulations, they can easily use the RAL quality mark as evidence of bidder eligibility and compliance with specifications. This procedure meets all requirements of procurement law in Germany.

The RAL brochure on public awards of contract (see the information on the right) provides you with more detailed information. The same applies to pages on this website on the following subjects:

Awarding public contracts and RAL Quality assurance

Oeffentliche Auftragsvergabe RAL 2020 Bild

tender information:

Bark mulch

RAL quality mark advantages – Calls for tender – Bark mulch

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:

Bark mulch carrying the ”Substrates for Plants” quality mark RAL GZ 250/1-1, particle size (as alternatives): fine / medium / coarse

  • Mulch material from shredded and fractionated (coniferous) bark to protect the vegetation and the top soil.
  • A layer of bark mulch must be applied to the entire planting area or tree pit surface at a uniform thickness of … cm.
  • The supplier must provide evidence that the production facility from which the product was delivered carries the ”Substrates for Plants” quality mark RAL GZ 250/1-1 (bark mulch).

Bark humus

RAL quality mark advantages – Calls for tender – Bark humus

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 bark humus

Bark humus carrying the RAL ”Substrates for Plants“ quality mark RAL GZ 250/1-2, particle size: < 20 mm

  • Soil improver from shredded, heat-fermented and fractionated (coniferous) bark to enrich the top soil with humus and improve top soil structure.
  • In the case of large-area tillage, bark humus must be applied to the surface before the final tilling. Apply … litres per square metre or a layer of … cm in thickness.
  • Substrate constituent from shredded, heat-fermented and fractionated (coniferous) bark to add to the planting hole filling. The bark humus must be mixed well with the material removed from the planting hole, using … litres of bark humus per planting hole. When using a planting auger, bark humus must be applied to the soil surface before digging and mixed during digging.

The supplier must provide evidence that the production site delivering the bark mulch carries the ”Substrates for Plants” quality mark RAL GZ 250/1-2 (bark humus).

Substrates for green roofs

RAL quality mark advantages – Calls for tender – Substrates for green roofs

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 green roofs

Substrate type:

  • Substrate for multi-layer intensive green roofs carrying the quality mark RAL GZ 250/6-1
  • Substrate for multi-layer extensive green roofs carrying the quality mark RAL GZ 250/6-2
  • Substrate for single-layer intensive green roofs carrying the quality mark RAL GZ 250/6-3
  • Substrate for single-layer extensive green roofs carrying the quality mark RAL GZ 250/6-4
  • Granular drainage material carrying the quality mark RAL GZ 250/6-5

The supplier must provide evidence of the relevant quality mark RAL GZ 250/6.

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.

RAL quality marks facilitate public calls for tender

  • Reliable criteria for bidder eligibility
  • State-of-the-art specifications
  • Specifications exceeding standard and legal requirements
  • Shortened tender process
  • No in-depth assessment of bids required
  • Reliable contractors and clear specifications

Contracting parties benefit from these advantages if they acknowledge the RAL quality mark as a proof of bidder eligibility and compliance with technical specifications in their calls for tender.
The reason is the strict Quality and Testing Regulations products and services must comply with in order to be awarded the RAL quality mark. The Regulations cover all relevant properties, including the manufacturer’s reliability and efficiency and the product’s technical and performance standards.

The RAL quality mark proves that these requirements are met consistently. If contracting parties base their calls for tender on the Quality and Testing Regulations, they can easily use the RAL quality mark as evidence of bidder eligibility and compliance with specifications. This procedure meets all requirements of procurement law in Germany.

The RAL brochure on public awards of contract (see the information on the right) provides you with more detailed information. The same applies to pages on this website on the following subjects:

Awarding public contracts and RAL Quality assurance

Oeffentliche Auftragsvergabe RAL 2020 Bild

tender information:

Bark mulch

RAL quality mark advantages – Calls for tender – Bark mulch

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:

Bark mulch carrying the ”Substrates for Plants” quality mark RAL GZ 250/1-1, particle size (as alternatives): fine / medium / coarse

  • Mulch material from shredded and fractionated (coniferous) bark to protect the vegetation and the top soil.
  • A layer of bark mulch must be applied to the entire planting area or tree pit surface at a uniform thickness of … cm.
  • The supplier must provide evidence that the production facility from which the product was delivered carries the ”Substrates for Plants” quality mark RAL GZ 250/1-1 (bark mulch).

Bark humus

RAL quality mark advantages – Calls for tender – Bark humus

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 bark humus

Bark humus carrying the RAL ”Substrates for Plants“ quality mark RAL GZ 250/1-2, particle size: < 20 mm

  • Soil improver from shredded, heat-fermented and fractionated (coniferous) bark to enrich the top soil with humus and improve top soil structure.
  • In the case of large-area tillage, bark humus must be applied to the surface before the final tilling. Apply … litres per square metre or a layer of … cm in thickness.
  • Substrate constituent from shredded, heat-fermented and fractionated (coniferous) bark to add to the planting hole filling. The bark humus must be mixed well with the material removed from the planting hole, using … litres of bark humus per planting hole. When using a planting auger, bark humus must be applied to the soil surface before digging and mixed during digging.

The supplier must provide evidence that the production site delivering the bark mulch carries the ”Substrates for Plants” quality mark RAL GZ 250/1-2 (bark humus).

Substrates for green roofs

RAL quality mark advantages – Calls for tender – Substrates for green roofs

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 green roofs

Substrate type:

  • Substrate for multi-layer intensive green roofs carrying the quality mark RAL GZ 250/6-1
  • Substrate for multi-layer extensive green roofs carrying the quality mark RAL GZ 250/6-2
  • Substrate for single-layer intensive green roofs carrying the quality mark RAL GZ 250/6-3
  • Substrate for single-layer extensive green roofs carrying the quality mark RAL GZ 250/6-4
  • Granular drainage material carrying the quality mark RAL GZ 250/6-5

The supplier must provide evidence of the relevant quality mark RAL GZ 250/6.

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.