100pcs Hot Tub Test Strips, 7 in 1 Ph Test Strips, Spa Test Strips Pool Test Strips Accurate Test Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine

Easy to use, quick accurate readings

Like what others have said colours don't match well to the tub so you're more or less guessing the levels, which defies the point of these. In this case you get what you pay for.

I have a hot tub and I’m always on top of making sure that it has a good PH and the correct amount of chlorine is in. My water is crystal clear. So obviously using test strips are important. These test strips don’t work at all. No matter how much chlorine I put in my tub the test strip doesn’t change colour. It’s the same with the PH, I haven’t a. Clue what the PH is as the strip doesn’t change. I must of used 20 strips within one hour as I kept checking the tub. Luckily I have a few of my old brand , which showed me. DO NOT BUY THEM!!!

These strips are very hot and miss in readingsNot clear regarding coloursWaste of money as does not do as says on tube

The colours for chlorine and bromine are showing as a murky green colour rather than blue so have no idea whether the levels are correct or not. Pointless product

The colour the PH test came out as didn't exist on the chart on the bottle. As this is the first thing you need to get right before adjusting other chemicals, it rendered everything else useless and not fit for purpose

Does not measure bromine /chlorine level

Colours are so pale. Other brand of strip showing 10ppm bromine where as these are saying 1ppm..... i think these are for swimming pools only not hot tubs