Nicotine content in WP mainstream*
| Nicotine (mg) | TPM (mg) | Mass ratio | |
| Mean | 3.8 | 608.4 | 0.006 |
| ±SD | 0.5 | 32 | 0.001 |
*Nicotine quantification in WP smoke from filter pads: n=3 for product 2; product 1 was not measured.
TPM, total particulate matter; WP, waterpipe.