The briquettes should burn with a clear, intense flame, and without odor or smoke.
The burning of the briquette and the flame produced, as well as the smoke given off, will
depend largely on the quality of the slack used and on the completeness of the combustion.
Binders also affect the production of smoke. Organic binders as starch/ molasses, paper or
sulphite-liquor residues likewise do not volatilize until decomposed, and hence do not
produce smoke, or produce little smoke. [4]