Low Range Chlorine Dioxide Test Strips, 0-10 ppm [Vial of 50 Plastic Strips]

Works well and easy to test. It was quite accurate as I used it alongside other tests I already have and it seemed to provide the same results as the other tests, so it was very comparable to other ones I've purchased. Clearly shows the level of chlorine, and I like the color accuracy of the strips as they match to the guide that is provided.

This test kit does NOT measure the chlorine dioxide level in 3R Purogene fresh water treatment for RV's and watercraft. It's probably not their fault. I dunno.

The city claims .8ppm. Using 5 stix they varied between .5 and 1 between the greenish and very light blue on the stix. They seem to work.

I tested low ranges and this product is very inaccurate and very hard to read. I tested one water with LaMotte high range and it was at least 10, but these strips seemed to show a 3ppm. Other waters tested at 0 (no change) when they definitely had at least 1ppm.

Eh, not to accurate when trying for zero. Test showed zero but when I had my water tested there was actually quit a bit of chlorine still in my water.

I believe this is just the nature of test strips like this. However, accurate reading devices cost hundreds of $$. Good for a 'spectrum', good enough reading.