cigarette filter perforation why do light cigarettes have the perforated filters? : r/Cigarettes What is this dotted line

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It tested poorly compared with other small-space purifiers in a 200-square-foot room, removing just 85.2% of 3-micron particles in 30 minutes on high and 73.6% in 30 minutes on medium

It's got that nice nice hit and raw tobacco flavours from the Italian Kentucky that show from the very first puff all through to the ashes on the bottom of the bowl

Kent Micronite Asbestos Cigarette Filter - Detail Detail view of a 1954 Kent Micronite asbestos-containing filter showing blue-colored crocidolite interspersed with cellulose-acetate and crimped crepe-paper media

Sewer A, Kogel U, Talikka M, et al