The #1 OTO Professional Series Replacement Solution is used for testing chlorine and bromine levels in pool and spa water. Maintaining proper water balance allows for a safe and clean swimming environment. Easy to follow instructions allow for hassle free testing.
WARNING: The following product(s) can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov