I wanted to update anybody who might be interested in having me do a nicotine determination on their e-liquid. Awhile ago, I posted on the nicotine determination thread that I'd test e-liquid samples for anyone who might want to send me their liquid. The response was good, and I've been able to test numerous samples and have found that the procedure works very well and gives accurate results. I appreciate everyone who has helped me to put my procedure to the test by submitting their ...