* The limit of quantification is the level below which the testing apparatus cannot reliably measure the levels of certain constituents. The level of detection is the level below which the testing apparatus cannot reliably detect the presence of certain constituents. In these situations, factors such as environmental contamination, laboratory reagents, and even the chemical composition of the tobacco leaf used in a product may trigger variations in the constituent levels. Constituents in this section, whilst they may be detected and/or quantifiable in one study, may not be detected and/or quantified in others.
[1] Labstat International ULC is an independent ISO 17025 accredited laboratory in Kitchener, Ontario, Canada.
[2] Average value determined over 3 independent studies.
[3] The 3R4F reference cigarette is a standard cigarette used for research purposes. Reference cigarettes are managed by the Center for Tobacco Reference Products at the University of Kentucky. Read more at https://ctrp.uky.edu/.
[4] THS2.2 is designed as an acceptable alternative for adult smokers, who could otherwise continue to smoke cigarettes. It therefore delivers similar level of nicotine.
[5] 100% of values below the limit of quantification.
[6] A ‘* ‘in place of standard deviation indicates the constituent levels for some or all replicates were below the limit of quantification (LOQ) of the analytical method. In these cases the median is reported instead of the mean.
[7] 43% of values below the limit of quantification. Median reported in place of the mean.
[8] 92% of values below the limit of quantification.
[9] 100% of values below the limit of quantification.
[10] 38% of values below the limit of quantification. Median reported in place of the mean.
[11] 100% of values below the limit of quantification.
[12] 24% of values below the limit of quantification. Median reported in place of the mean.
[13] 76% of values below the limit of quantification.