I emailed the manufacturer of nic salts i am using asking for molar weight of their salt and the reply i got back states: "Unfortunately I am unable to disclose the ingredients or formula we use to create our salt nicotine, but we use a GC/MS machine to check strength as titration isn't possible. I hope this helps!".
My question is: Why would titration be not possible? This is not a first time i am hearing such claim, but not sure what it is based on.