Average smoking topography parameters values of 2,432 subjects compared with the ISO/FTC parameters (modified from the reviewed by the WG 9 of the ISO TC 126) ref. 154
| ISO/FTC | HPPs grouped by tar yield (mg) | |||||
|---|---|---|---|---|---|---|
| ≥14 | 8-14 | 3-8 | <3 | |||
| Puff characteristics* | Puff volume (mL) | 35 | 48.1 (10.7) | 47.8 (6.3) | 54.7 (9.7) | 57.2 (8.9) |
| Puff duration (s) | 2 | 1.9 (0.4) | 1.8 (0.3) | 2 (0.3) | 1.9 (0.1) | |
| Puff interval (s) | 60 | 26.1 (8.8) | 27.3 (8.7) | 22.6 (7.1) | 18.9 (0.7) | |
NOTE: The HPP puff volumes are higher and puffs are drawn at less than half the interval of the ISO/FTC parameters. Also, the HPP puff volumes increase and the puff intervals decrease corresponding to the decrease in tar yields.
↵*Mean (SD) values for HPPs.