Industrial Test Systems SenSafe 481026 Free Chlorine Test Strip | USEPA Approved Method D99-003 | 0-6ppm | 0.05ppm Detection | No Bleach-Out | Bottle of 50 | Drinking Water, Food Service, Restaurant

These strips have always worked great for monitoring the free chlorine in my processed well water. I think some of the bad reviews saying it detects no chlorine are people not understanding the difference between free (reserve) chlorine and total/combined chlorine? Anyway, these strips are pretty accurate when compared to the Taylor liquid test but much simpler and quicker to use. I will continue to buy these without hesitation.

My whole-house water filter contractor keeps wanting to replace my filter, but I test with these strips a say, no thanks, the water stills tests filtered for chlorine.

Does not register chlorine

I use these to test the free chlorine level in the water tank at our off grid cabin.

I have tested 3 different brands of test strips over a 7 day period and they did not correlate at all. 0.2 to 4.0 That is a huge difference when you are drinking the stuff. If you simply need to check if you have chlorine in your water these will work. If you need a definitive number go with a Taylor chlorine kit instead. For reference: I check my drinking water tanks for free chlorine every morning. When it gets below 0.2, I add 2.5 teaspoons of (drinking water approved) chlorine granules to a 2500 gallon tank. For our water usage, it will last a week before I need to chlorinate the tank again.

Worked great for chlorinating a well. Needed to know when chlorine was out of the water.

Easy to use product

Does not work. Even 50/50 bleach water