Valterra Blue Devil #1 OTO Chlorine Test Reagent | 8 Oz. | B7500

​Valterra's #1 OTO Reagent (B7500) is a specialized liquid used to measure chlorine levels in pool water. Packaged in an 8-ounce plastic bottle, it's intended for use with the Blue Devil Test Kit. To utilize, add a few drops of the reagent to a water sample in the test kit; the resulting color change indicates the chlorine concentration. Regular testing helps maintain proper chlorine levels, ensuring effective pool sanitation. ​ Highlights Accurate Chlorine Testing: Designed for use with the Blue Devil Test Kit to measure chlorine levels in pool water. Easy-to-Use Liquid Formula: Simply add a few drops to a water sample for a quick and reliable reading. Clear Color Indication: The reagent produces a visible color change to indicate chlorine concentration. Convenient 8-Ounce Bottle: Provides ample supply for regular pool water testing. Essential for Pool Maintenance: Helps ensure proper chlorine levels for effective sanitation and water safety.