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BBQ Charcoal

Fixed Carbon

Fixed carbon is the combustible carbon remaining after moisture, volatile matter, and ash are removed (calculated by difference); it largely determines a charcoal's heat output and burn duration.

Carbonization drives off volatile matter and leaves a carbon-rich coconut shell charcoal that keeps the original shell curvature. Ash, fixed carbon, volatile matter and moisture in this material are determined together by proximate analysis under ASTM D1762.

Fixed Carbon

Fixed carbon is the combustible carbon remaining after moisture, volatile matter, and ash are removed (calculated by difference); it largely determines a charcoal’s heat output and burn duration.

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Coconut shell charcoal briquettes leave a white-silver ash after a complete burn, and the ash residue itself is quantified as ash content by proximate analysis under ASTM D1762 or ISO 1171. Colour observed in a tray is an indicator only; the reported figure always comes from the laboratory method, stated on the certificate of analysis.

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