Product Analysis

WBC Biochar

The World Biochar Certificate guidelines have been in force since May 1, 2023 and are the basis for the certification of biochar outside the European Union and all EFTA countries. The WBC standard contains the guidelines for the sustainable production of biochar, was developed by the Ithaka Institute and is owned by Carbon Standard International.

Ruhr Lab GmbH has been one of the WBC accredited laboratories since 05.2023.

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Pos. Parameter Method WBC Basic Additional
1. Sample Preparation 1 ISO 13909-4 / DIN 51701-3
•
2. Total Moisture 1 ISO 589 / DIN 51718
•
3. Inherent Moisture 1 ISO 11722 / DIN 51718
•
4. Ash 1 ISO 1171 / DIN 51719
• (550°C)
• (815°C)
5. Carbon 1 ISO 29541 / DIN 51732
•
6. Hydrogen 1 ISO 29541 / DIN 51732
•
7. Nitrogen 1 ISO 29541 / DIN 51732
•
8. Sulphur 1 ISO 19579 / DIN 51724-3
•
9. Bulk density 1 DIN EN ISO 17828 / VDLUFA A 13.2.1
•
10. Conductivity / salt content 2 DIN ISO 11265
•
11. Conductivity (of the pyrogenic solid) 2 House method
•
12. pH-value 2 DIN ISO 10390
•
13. Carbonat-CO2 2 ISO 925 / DIN 51726
•
14. Oxygen (calculated) 1 ISO 17247 / DIN 51733
•
15. Corg, H/Corg and O/Corg (calculated) 1
•
16. PAH (EPA, 16 Parameter) 3 DIN EN 17503 (10.2.3 Extraction with Toluol)
•
17. Trace elements (Ag, As, Pb, Cd, Cu, Ni, Hg, Se, Zn, Cr, B, Mn) 3 DIN EN ISO 12846 / DIN 22022-1 / DIN EN ISO 17294-2 / DIN 22022-7
•
18. Main elements (P, Mg, Ca, K, Na, Fe, Si, S) from Ash 550°C 3 DIN 51729 / DIN EN ISO 11885
•
19. Water holding capacity 3 DIN ISO 14238 Anhang A
•
20. Gross and net caloric value 1 ISO 1928 / DIN 51900
•
21. Volatile matter 1 ISO 562 / DIN 51720
•
22. TGA 3 House method
•
23. PCB/PCDD/PCDF/coplanare PCB 3 VDLUFA VII 3.3.2.2 / VDLUFA VII 3.3.2.4 / DIN EN 16215
•
24. Specific surface 2 DIN ISO 9277
•
25. Chrome(VI) 3 DIN EN 16318
•
26. Size distribution 1 ISO 1953 / DIN 66165
•

1 = flexible accreditation / 2 = not accredited / 3 = subcontracting
All listed parameters, unless otherwise indicated, are subject to the accreditation of Ruhr Lab GmbH according to DIN EN ISO/IEC 17025:2018.
Registration number: D-PL-21007-01-00.
Ruhr Lab GmbH has a flexible accreditation scope in which the free selection of standardized or equivalent test methods is permitted by DAkkS.

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