US$ 23.33
extra filter for cigarette Disposable Dual-Core Spiral 25-Layer Tar - Coarse, Medium, Fine 3-in-1 Filtering - Hard Tip with Micropore Technology - Pack of 100 Hi Tobacco Extra Slim Cigarette
Description
Ltd, which markets Nat Sherman cigarettes

In the end they went down fighting

these observations point to a practical limit in the quantity of HAC that is effective at reducing yields of some toxicants in a cigarette filter

Athalye VV, Mistry KB (1972) Uptake and distribution of polonium-210 and lead-210 in tobacco plants
