Burning Time: 5 - 7 hours Moisture: 6-8 % Fixed Carbon: 85% Calorific Value: 6500 to 7000 Kcal/kg Ash Content: 1.5-2 % Volatile Matter: 12.5 to 30% Sizes: 20mm to 100mm, 30mm to 200mm (based on your request) Shape: Lump / Briquettes / block Foreign Matter: 1 % made with physical methods, 100% pure hardwood No Chemical contents ph value :7-9 Our charcoal can be use for both open and closed fires, smokeless coal for domestic use, recommended room warmer& barbeque, No traces of soil or other elements, Long life burning, burn without any smoke or fume during the initial ignition and during burning duration.