JNW Direct Pool Test Strips 7-in-1, 150 Quick and Accurate Pool and Hot Tub Test Strips - Pool Water Testing Kit for Chlorine, Bromine, pH, Hardness, More - All in 1 Swimming Pool Test Strips by

It is inexpensive, fast, and easy. Accuracy is questionable though, and that is problematic for me. I think I have gotten mostly accurate readings over the last several uses, but I did not double check all the measurements to test if what I think is correct or not. I cannot rely on these tests strips for an accurate reading of free chlorine today. In the first picture, the color range result for the free chlorine test strip looks like 0-.5ppm. It is the third row (the text strip is longer than the bottle). If I solely relied on this reading, I would have added chlorine to increase the chlorine level. That would have been a mistake. Yesterday, the free chlorine reading in my pool was 3.44ppm, which is a little high. I live in South Florida, and it rained yesterday and overnight, so I expected a small drop in free chlorine, but not this. I tested the water, immediately after this test strip reading, with a digital meter, and the free chlorine reading is actually 2.51ppm. I bought this product hoping to lower the amount of times I use more expensive test strips for my digital meter. Unfortunately, that expectation was too high. I would only use this product in between tried and true testing for a red flag.

These pool test strips are super convenient and give quick, fairly accurate readings for multiple water parameters. The color chart is easy to use, and the strips are individually wrapped, which helps keep them fresh. My only small issue is that reading the colors in low light can be tricky, but overall they make pool maintenance much simpler and save a lot of time compared to manual testing.

All good

I find these strips are very accurate, but the colors get strange if you try to use them from one season to the next. We keep them indoors except for the 2 minutes of testing/adjusting and the colors don't fade necessarily, but rather change completely (especially for chlorine levels -- instead of the "new" pink, the ones from last year are brown). The cost is great, so I don't mind replacing each spring. 150 strips is more than enough for the summer even given the large number we use at the start of the season.

The JNW 7-in-1 Pool Test Strips are a highly convenient and cost-effective option for routine pool and spa maintenance. The generous 150-count bottle offers exceptional value, ensuring you have enough strips to test your water regularly throughout the entire season.