Tests for: Phosphates in 1 minute
Good for 20 tests.
Measures phosphates from 0 to 1000 parts per billion. Comes with test vial, color chart & directions.
Use the most accurate method for phosphate testing: a one-step, one-minute phosphate test. Even very low levels of phosphate can feed algae and create problems in pool water. Test for phosphate once a week as the concentration in the water can increase rapidly due to rain, debris or bather load.