| Carbonio fisso | Zolfo | Cenere | materia volatile | umidità | Azoto | Dimensioni |
| 95-99% | 0.01-0.03% | 0.2-0.5% | 0.2-0.5% | 0.2-0.5% | 100 ppm | 1-5 mm |
| 95-98.5% | 0.01-0.05% | 0.2-0.7% | 0.5-0.8% | 0.2-0.5% | 200 ppm | 1-5 mm |
| 95-98% | 0.01-0.05% | 0.5-1% | 0.8-1% | 0.2-0.5% | 300 ppm | 1-5 mm |
| 95-97% | 0.01-0.1% | 1-2.5% | 0.2-0.5% | 0.2-0.5% | 300 ppm | 1-5 mm |
| Dimensioni | 1-3mm,1-5mm,5-8mm ecc. | O secondo le vostre esigenze | ||||