Industrial Test Systems480014 WaterWorks Peroxide (H2O2) Test Strip | 0-100ppm Range | 30-Second Test Time | 50 Test Strips | Top Selling Peroxide Strip | For Pool & Spa, Drinking H2O, Laundry, etc

I bought these to test my swimming pool that uses an oxygen generator facilitated by adding liquid peroxide. They worked well and seemed to be accurate. Reacting strongly to pure perox concentrate and not at all to plain well water, and varying shades to the treated pool water. Price point was reasonable.

Buena confiabilidad en la medida

These work and fast! Super helpful for a temporary pool kept sanitized with Hydrogen Peroxide. Used these to test the water over the summer and agree with the readings being accurate. If you're wanting more specific values, get specific strips. These worked great in my case.

Producto recibido como lo pedí

Easy to use. Easy to read. Affordable. Work well for my epsom salt float tanks. I use peroxide to keep my tanks clean.

These work very well for me with my hot-tub - easy to understand and read. Very clear color guide on the side of the bottle. Been using for over 2 months to check my levels a couple of times a week. Very happy with them.

I was looking for a test strip that wasNot instantaneous so I’d have a few seconds toput it down and get things lined up. This is great. Plus it has results to 100ppm which done don’t. The price is good and the quantity is high. Good buy.

It's OK - but a bit rough when you are trying to maintain a hot tub to the specified minimum level of 50ppm - this isn't finely graded enough to tell you whether or not you have 50ppm or 200ppm - but if you don't care how precise you are, it will certainly let you know if your level isn't high enough.