Federal Not applicable under Federal law State Retailers must post signs (no smaller than 8 1/2" x 11" or 93 square inches) at each point of sale that say: STATE LAW PROHIBITS THE SALE OF TOBACCO PRODUCTS TO PERSONS UNDER THE AGE OF 21 YEARS
Standards (e.g., ISO, Health Canada Intense) define puffing regimens, though real-world behavior often exceeds machine yields as smokers compensate
Products like King Palm wraps include humidity packs to preserve freshness, a detail often overlooked in traditional rolling papers
Statistical analysis showed that there was a statistically significant difference in the amounts and percentage of nicotine between cigarettes randomly chosen from four different packs of each domestic brand
2014: Tobacco Control "Four hundred and sixty brands of e-cigarettes and counting: implications for product regulation": This study found that by January 2014, there were 466 brands and 7,764 unique flavors, making studying and regulating these devices a complex matter