The more I look into quinine and the factors needed for its luminescence, the more I appreciate the fluorescence of tonic water. It really is a happy coincidence that tonic water provides the right conditions for it to work at all!
In this video, I look into some of the factors that will affect the fluorescence of quinine. And you will find out what I poured into the tonic water in the previous video to shut off the fluorescence. Did you guess right?