The Effect of a Perforated Mouthpiece Tube on Cigarette Smoke Reduction

Cigarette smoke reduction due to a perforated mouthpiece tube was measured, and its results were compared with the reduction caused by conventionally vented acetate filters. The reduction of nicotine and tar increased with the ventilation rate through the perforated tube. In the absence of a filter material, the difference between the reduction of tar and nicotine was found to be greater than that observed for conventionally vented filters, and the concentration of nicotine in tar was enhanced. The reduction of carbon monoxide, carbon dioxide, acetaldehyde, isoprene and acetone were all proportional to the ventilation rate through the perforated tube. The presence of a filter material had no effect on the gas and vapor phase components.