Finding F-0157

“PM concentrations of Natural American Spirit blue are divided into 92% (73.55 μg m−3) PM1, 7.4% (5.9 μg m−3) PM2.5 and 0.6% (0.14 μg m−3) PM10.”

Iffland High particulate matter emission from additive-free Natural American Spirit cigarettes… (2016). SpringerPlus. Page 4. CKB 7148

Structure

Source: Tobacco smoke (secondhand smoke)
Factor: Particulate matter (PM₂.₅ and PM₁₀)
Setting: test chamber, DE
Study design: experimental study: combined mainstream and side-stream smoke of four Natural American Spirit cigarette types without additives and the 3R4F reference cigarette, 100 cigarettes smoked by an automatic environmental tobacco smoke emitter under a standardised protocol, PM10, PM2.5 and PM1 measured (class 4)
Effect: mean 73.55
Caveat: the paper reports the size fractions as increments, so PM2.5 and PM10 here mean the mass between the size cuts, not cumulative PM2.5 and PM10

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.