Description Pentair Rainbow Test Kit Solution OTO 1 is a replacement reagent chemical for checking your pool and hot tub water. Solution 1 should be replaced every year for maximum effectiveness and accuracy. This Water Test Kit Solution is a product that checks for chlorine or bromine in the blink of an eye. It is used with the Pentair Rainbow reagent No. 1 OTO solution. This bottle contains 1/2 ounce and is a perfect replacement for your Rainbow kit solution “A”. Reagents No 2 OTO solution 1/2-ounce solution bottle Chlorine/Bromine Test Replaces Rainbow Solution “A” .1% Orthotolidine 5.14% Hydrochloric acid Show More Show Less
