Charcoal / Briquettes
| Property | Specification |
| Shape | Cylindrical, Oval, Square, or Pillow-shaped |
| Size | 4 - 6 cm (Length), 2 - 4 cm (Diameter) |
| Density | 1.1 - 1.3 g/cm³ |
| Moisture Content | Less than 10% |
| Ash Content | 3% - 7% |
| Fixed Carbon Content | 70% - 85% |
| Volatile Matter | 15% - 25% |
| Calorific Value | 6,000 - 7,000 kcal/kg |
| Burning Time | 4 - 6 hours (depends on size and quality) |