Suppose a qualified chemist (not just me) wanted to run simple titration curves for vendors. Because it is a nicotine assay, does one have to have a license to do this for a small business in PA? Until I find out for sure, I am going to do tests for free, but I would like to be able to provide the service professionally eventually. I am thinking in terms of protecting myself. I think there may be a lot of qualified people that can do this, which would be a great benefit to the industry...obviously this is one of my goals. Where does one even begin to look into this? I am quite qualified, but not officially certified. Thanks in advance for any advise!