Incorporating sensors, chemical indicators, or controlled-release agents into filter tow can enhance user experience, provide health insights, or improve product safety
Common insulation materials include fibreglass, non-combustible mineral wool, foam boards and natural fibre such as wood or cork
Spirometry tells how much airflow is limited
The exterior is worked in cloisonn with a pale ground filled with tight spiral cloud scrolls, centred by a coiled blue five-clawed dragon rendered with fine wire outlines and scaled sections
Filter vents allow air to dilute the smoke being passed through, reducing the concentration of tar and nicotine in every puff
Multiple studies have shown that every 10% increase in the price of cigarettes reduces consumption by about 4% among adults and about 7% among youth