A brief nicotine fiend's guide to the world of American dry snuff. These tables are extracted from IARC monograph vol. 89 (pg. 65-66) (2007): http://monographs.iarc.fr/ENG/Monographs/vol89/index.php
. I'm sure many had seen this before, there were links and references to the source in some older threads of this forum.
NB: Tables contain old (2003) data. It refer only to tested samples.
The key-figures for nicotine are in the last two columns (unprotonated nicotine). These indicates actual potency of snuff.
Notice how potency correlates with pH value.
I will post ingredients of some snuffs later.