Spa Check™ 3 in1 (NCW-481336)
There is a precise colour chart on the back of the bottle to check and understand your results.
This 3 in 1 simple, colour test strip is a compact spa water check test and allows you to test for the following parameters in your water: Total Alkalinity, Total Bromine and pH. This allows you to test your water for simple maintenance. Note: This is the first strip specifically designed with the spa owner in mind and that gives a true Total bromine reading: bromine + bromamines.