cigarette filter for weed The Great Fraud WBD Smoking Cigarette Holder Filter

Filters are an essential part of smoking for many users, as they prevent loose bits of herb from getting into your mouth as you take a hit

J Polym Environ 32(3):13261341

Tobacco companies have the choice of being supplied with ready-to-use filter rods from a myriad of manufacturing companies or produce their filters in-house, taking deliveries of raw materials such as cellulose acetate (CA), polypropylene (PP) or since relatively recently - polylactic acid (PLA) tow in addition to a range of plug wraps and tipping papers

While the use of such colour change material would probably have little or no effect on the actual effectiveness of the filter tip material, the advertising and sales advantages are obvious

Macromol Symp 262(1):8996