AquaChek's test strips allow pool and spa owners to test their bromine-based sanitation systems for total alkalinity, pH, bromine, and water hardness. Simply insert the test strip into the pool or spa water for 1 second, and seconds later you have fast, accurate results. It is recommended that you test your pool a minimum of twice per week, and spas before each use, to get an accurate picture of the health of your system.
Directions
Dip and remove strip.
Wait 15 seconds.
Compare pad to color chart on bottle.