Tests for: Sodium Bromide.AquaChek Sodium Bromide Titrators allow you to measure Sodium Bromide with greater precision than dip-and-read strips, simplifying bromide water testing for systems using bromide generators. The titrators yield accurate results in 3 - 5 minutes. To keep you pool water clean and healthy, test the water at two ends or sides of the pool a minimum of twice a week! If used in a spa we recommend testing it before and after each use. It"s also a good idea to write down your results each time you test.