It doesn't sit well with me either, even though I threw it out as an unknown earlier. As you say it would be easy to lower a sample. It would also be easy to fake getting a higher concentration if you supposedly ordered say, 36 mg/ml nicotine.
To fake a 270 mg/ml concentration would take quite a bit of really high (like pure) nicotine. If I did the math right (which is a big if...) then you could mix 80 ml of 100 mg/ml with *20 ml* of 990 mg/ml nic and get close to the concentration that the BE nicotine tested at. That's a lot of pure nicotine for someone to be handling. It's within the realm of possibility, but it doesn't seem likely. Since there is that shred of doubt, I don't blame BE for jumping all over it. That's what I'd do if were them. This possibility does need to be addressed if testing like this is going to happen in the future. I just can't think of how. If one does get a nic that seems to be off, you can't know until you open it. You can't test it until you open it, but if once you open it any testing becomes invalid because of the possibility of tampering, then it's never going to be possible to hold a company accountable in this way. (Catch 22ish situation)
Whatever is the case with the really high sample, it does seem clear from the other samples, that QC is not up to par.
Spazzy, we're saying exactly the same things here.