The Ozone Test Kit is the reliable method for determining if a hot tub ozonator is producing effective ozone. Research shows that up to 60% of home spa ozonators are generating insufficient or no ozone, even if making air bubbles. Test yours to be sure.

30-second hot tub ozonator tester

Blue media turns white if ozone is sufficient

Product notes: If test shows no ozone output (media remains blue) it may be re-used within 1 year. Kit contains 1 ozone detection ampoule, clear connection tubing, and easy instructions.