Review on Accurate And Versatile - 7 In 1 Test Strips For Pools, Spas, And Hot Tubs - Perfect For Home And Commercial Water Testing by John Anaya

Easy to use and colors are vibrant to make judging levels easier. Small complaint is that the strips don't line up with the color guides on the bottle. Bigger complaint is that it doesn't appear to show Bromine levels with any accuracy. I have a bromine spa that I have ample bromine reserve (created with sodium bromide power) and have added chlorine to create bromine sanitizer. Strips show no bromine and show chlorine only. Emptied and tried again, same. I was suspicious even at first since the bottle says the target for bromine is 0 ppm when, if you're running a bromine spa, should be 3-6 ppm.