Chlorine Test Strips 5 in 1
50 pool test strips for measuring chlorine, pH, bromine, water hardness, cyanuric acid, and total alkalinity.
Simply remove a strip, close the can tightly again, briefly hold it in water, and after approx. 5-10 seconds read the color and compare it with the scale on the can or here.
Please note that test strips only give a guideline and cannot be used as an exact measurement method.