Keep your pool or spa as safe as possible by checking all of the chemical levels daily. Valterra’s Blue Devil 5-Way OTO Testing Kit comes equipped with everything you need to get started. Check acid demand, pH, alkalinity, bromine and chlorine. The easy to read tester indicates the results with a color code. The tester also indicates whether or not you need to add more of each chemical.
Blue Devil 5-Way OTO Testing Kit FAQs
Comes with three 1 ounce bottles and two ½ ounce bottles for your testing convenience. Includes the storage and carrying case. Full testing instructions are in the case. The easy-to-read comparator is also very user-friendly. Put some of your spa or pool water into the comparator. Next, test the chemical levels with drops from each applicable bottle.