7 IN 1 Hot Tub Test Strips,pool test strips,spa test strips,100 Pcs ph test strips, Easy and Quick for total water hardness, total chlorine, free chlorine, ph, total alkalinity, bromine, cyanuric acid

As described.

I don't know if they're old or just useless but these did not do anything even in extreme tests, like vinegar.

confusing to read results

Colours are way of so you cannot distinguish actual validity of product in the water, very annoying. You can work out a similarity but you shouldn’t have too!

No colour change for Chlorine or Bromine when there is definitely chlorine present. Other colours don't match the bottle.

Bought these as they were quite cheap, but I guess you get what you paid for. Either the colour on the test strips are faulty, or the printed label colours are out. Non of the test strips come out matching colours, they’re all a bit off coloured compared to the label. For instance what’s meant to come out as orange is more of a yellowish colour.

The colours on the strips do not match what's printed on the container

When I tested this along with another test strip from ClearWater, it is obvious that these strips are not accurate at all, waste of time, if you only use these then be prepared to think you are going into your safe hot tub when the reality is that the pH or chlorine could be too high or too low, avoid at all costs!