ABSTRACT
Limited amounts of non-toxic smoke can be easily and inexpensively produced by heating small quantities of ammonium chloride (NH4, CL, sal ammoniac) in a heater cone or in an aluminum pan on a standard hot plate. Ammonium chloride can be found at most chemical supply stores for approximately $3.00 per pound. A heater cone is an inexpensive ($4.00) porcelain cone with a heating element wrapped around it. The cone holds a small quantity of powder (1 oz.) and has the advantage of heating up and cooling off more rapidly than a hot plate. A hot plate with a heating control allows more effective control over the duration of the smoke.
