Unusual Lighting

Colliding drops of Tonic Water and tap water, lit with Ultraviolet only flash, the quinine in the Tonic Water fluoresces blue when illuminated with UV. The pink bits at the bottom are remnants of fluorescent pink ink that did not clean out well enough from the previous session, I really like the effect though. The background is lit by a normal flash with a CTO gel, care had to be taken though so that the normal flash did not illuminate the drops.