Smoke Ring Generator

Smoke Ring Generator. The Zero Blaster is a toy that produces 2 inch smoke rings that travel 5-10 feet and then dissipate after about 10 seconds. (ZeroToys.com). The smoke ring is a vortex of mist. Releasing the trigger causes the end of the smoke chamber to flex forward, forcing air to move through the center of the chamber and out. Friction at the edge of the front circular opening results in a vortex ring. See diagram. Instructions for use: 1] A chamber is filled with a special liquid: Super Zero Fog Fluid (a non-toxic mixture of USP propylene glycol, glycerine, and distilled water). Note: Propylene glycol is a food, drug and cosmetic additive that is generally considered safe, but may cause an asthmatic reaction in a very sensitive people. 2] Turn Switch to ON. 3] Push down on Button A for several seconds, causing a heating filament to vaporize the fluid into a fog or mist. 4] Pull Trigger B back, then let it snap forward, sending forth a smoke ring. . Note: The smoke rings are best displayed against a dark background, brightly lit from the side. If the class is dark, a powerful flashlight or lamp can be used to illuminate the ring as it shoots forward.