EASYTEST 9-Way Pool Test Strips, 140 Strips for Hot tub and Spa, Accurate Testing pH, Total Chlorine, Free Chlorine, Bromine, Alkalinity, Total Hardness, Cyanuric Acid, Salt and Copper

I have found that the Hardness, Free and Total Chlorine, Alkalinity, and pH are pretty close but the Cyanuric Acid is basically useless as it is for most paper test strips from my understanding. CA showed zero when it was actually about 80ppm when I first tested. I have the TaylorK-2006C which is perfect for fine tuning your chemicals and shows far more precise numbers but it's also $125 so I only use it to get my CA and alkalinity. I also bought a separate electronic salt meter that shows pH, etc and the strips are close but when adding pH down, I refer to the pH reading on the electronic meter so I don't add too much. But for what they are these test strips are the cheapest and best way to keep track of your pool's readings.

These are easy to use, easy to read, quick responding. It’s a little weird the way the label calls for the bottle to be turned upside down in order to read it, but not really that big a deal, just confusing. Works well, clear results, recommended.

So easy to use with the chart provided on the back of the bottle. Makes it very easy to see where my levels are and where they need to be. I have never owned a pool before so this is a learning experience for me when it comes to figuring out the exact levels of the chemicals. The bottle easily shows the Ph, water hardness, alkalinity and so on. Comes with plenty of test strips for the low price. This has been such a great experience for me and I can’t wait until the water warms up enough for me to be able to get into the pool!!

They work good and are pretty accurate for a while. I keep them inside and air conditioned but they seem to be a little inaccurate after being open a couple months. I check my pool twice a day and it still takes a while to use them all. They are accurate and I will continue to buy them, I just wish there was a better way to preserve them.

These work and are simple to use. They give a clear reading.

Super easy to use and results are easy to read with guide on the back of the bottle. I will buy again and highly recommend.

work well for Total Alkalinity and Bromine level, but very hard to read the pH by color. It never seems to be the orange color for low pH. Instead it just looks like the same magenta color only very faded.

Use strips for hot tub. Used several seem to work well. Seems to a good value. Would buy again.

Most 7 in 1 tests that I've come across have been roughly $55 for a 100 pack.. assuming these are affective, it's an amazing find! Very simple and striaght forward to use too.

The strips didn't work, kept reading ph wrong. I bought distilled water to double check - consistently read it at a ph of 6. I tried another sample if purified water - did the same again.

I've used twice the recommended amount of chlorine for the size of my pool, but these test strips stubbornly give me a reading of 0ppm. I'll use another brand.

Item received on time. Used only once very precise and because of that you can treat your pool accordingly. Product highly recommend.

Work great I don’t know how I can use 150 pcs. in 90 days. I little disappointed on the short shelf life