Industrial Test Systems | SenSafe Ozone Check Test Strip 481234 | 0 - >0.5ppm Range | Bottle of 50 | Made in USA | Lowest Detection Levels | 30-Second Test | Drinking Water, Restaurants, & More

I recently replaced my ozone generator in my hottub. I used to be able to detect the ozone odor in the bubble stream but not anymore so I purchased these strips to test for ozone.I received the product tonight and I had read some reviews saying it read the same no matter what so I ran a side by side test. I took two large shot glasses (directions say about 2 oz) and filled one with hottub water and the other with hot tap water and followed the instructions for testing both at the same time. The tap water showed yellow (no ozone) and the hottub dark green (max ozone reading). So the strips work and so does my ozone gererator!

I bought a cheap ozonator online and was skeptical it actually worked. I bought these strips to test the water afterwards and it’s obvious the ozonator does not work. This test is great and easy to use, I will continue to use it to test out my new ozonator when it arrives.

I am on the fence after trying this product. I believe that if chlorine is used the results may not be accurate so I did a test in my 800 gallon hot tub. I let the chlorine go to zero and tested the ozone then ran the ozone generator for three hours and tested again. Both readings were about the same. I have repeated this process several times and do not see evidence of a reliable reading that changes after injecting ozone. When there is a small chlorine residual i do get higher ozone readings but that seems to be affected by the chlorine. I will keep on trying to learn how to use these test strips but my initial impression is that this is not a good product and I don't recommend it. BTW I have followed the instructions and used the temperature compensation chart to determine how long to swirl and followed all other time requirements for when to read etc. When there is a reading the color variations are also very difficult to discern. Definitely not a 5 star product, I gave 3 star because I am still experimenting but I think in the end this is a zero star product.

Thanks

product does not fulfill its promises. It does not make the correct reading, not nen out the first marking of 0.05 ppm or putting 10 grams of ozone in one liter of water.product does not provide. I want my money back.

Test worked fantastic. Test of water before ozone generator read 0.0. Test after ozone generator read greater than 0.5. Easy to use and fast to test.

2 stars until I can confirm it works properly.side by side test in 2 clear shot glasses of water.1. glass with 2oz water from the tap (Register as 0.05 to 0.1)2. glass with 2oz water from clean cold plunge water (Register as 0.0)I have done this test a few times and the result is always the same.Trying to confirm if my Ozone generator is working, per this test strip it is not.HOWEVER, I EXPECT TO GET 0.0 OUT OF THE FRESH DRINKING WATER FROM THE FAUCET, BUT i GET A 0.1Anyone with similar tests?

Check to see if my hot tub ozonator is working. According to the strips, it’s good.