Certification of solid biofuels
The DLG experts certify solid biofuels according to the product-specific DLG quality standards. In addition to the criteria specified for this effectiveness test, further product properties can be tested and certified. Solid biofuels that pass the tests receive the DLG quality seal.
All DLG-certified operating resources are subject to constant monitoring. Consistent product quality is ensured by regular repeat tests or analyses. In addition, samples are taken from the manufacturer or from retailers.
Im Fokus (copy 1)
In focus
For solid biofuels, it is important to observe the ash melting behaviour. The products are tested according to the standards DIN EN 14961-1, DIN EN 14961-2 and DIN EN 14961-3. There they are checked for particle size, calorific value or nitrogen and heavy metal content.
Your advantages
Your advantages
After passing the test, the products receive the DLG quality seal. Thanks to this seal, buyers can be sure that this product fulfils all the important practical requirements, as confirmed by a neutral testing laboratory. The high profile of the seal and the trust that practitioners place in it supports your marketing and sales.
DLG test criteria for solid biofuels
Wood chips
- Requirements according to DIN EN 14961-1: Particle size, water density, bulk density, ash content, calorific value, nitrogen, sulphur and chlorine content, heavy metal content
- Ash melting behaviour
Wood pellets
- Requirements according to DIN EN 14961-2: Diameter and length, water content, bulk density, fine content and mechanical strength, ash content, calorific value, nitrogen, sulphur and chlorine content, heavy metal content
- Ash melting behaviour
Wood briquettes
- Requirements according to DIN EN 14961-3: Diameter, length, width, height, water content, particle density, ash content, calorific value, nitrogen, sulphur and chlorine content, heavy metal content
- Ash melting behaviour
Firewood
- Requirements according to DIN EN 14961-1: Colour and appearance of the logs and cut surfaces, mean length and diameter, water content, volume percentage of split wood, ash content, calorific value, nitrogen, sulphur and chlorine content, heavy metal content
- Ash melting behaviour
- Proportion of mould and rot
Contact
DLG Test Centre for Technology and Operating Resources
DLG TestService GmbH Location Groß-Umstadt
Max-Eyth-Weg 1 • 64823 Groß-Umstadt
Tel.: +49(0)69 / 24 788-600 • Tech@DLG.org