Testing Ozone in Water is very simple with Dr O Solutions test kit.
Just put water sample in provide test vial, add drops from provided Fine Tip Dropper and measure dissolved ozone in water in 0.5 ppm (+/- 0.5 ppm accuracy)
Enclosed dropper is provided for you convenience and precise water dozing.
Kit Contains:
25 ml Glass Test Vial, 3 ml dropper, 15 ml test solution ( 90+ tests of 2 ppm ozone), Instructions
Works well, I was able to be sure I had 2ppm using this product.
Haven’t tried it yet