Let's say you're testing the free chlorine content of 1% bleach, which has a pH of 11.8. If the pH is reduced to 8, for example, will the colorimetric response of the Extra High Level [...]
The Chlorine Dioxide 0-500 test strips will react to free chlorine solutions, in fact this is how we check the color chart. Only the Low Level Chlorine Dioxide 0-10ppm has an inhibitor for free chlorine. [...]
Our chlorine test papers are based on the potassium iodide starch reaction. As such, many oxidizing species will cause the paper to turn purple. The iodide that is impregnated in the paper is oxidized to [...]
It is not advisable to use our chlorine test papers to measure chlorine concentrations made with non-regular bleach. Non-regular bleach will turn the test paper blue/purple, however, the bleach formula contains additives that influence the [...]
All of our Peroxide test strips are suitable for detection of hydroperoxides and ether peroxides. Polymeric peroxides, which can form in diethylether, are not detected. Organic peroxides, such as di-terc-butyl peroxide, di-cumyl peroxide or terc-butyl [...]
If you are using the 345 chlorine books to measure chlorine levels, you should use the same chart as the 145 chlorine test papers.
The colors for the 10, 50, 100, 200 ppm chlorine will be the same progressively more purple color. Above 200 ppm the purple will intensify further to the point that it will appear almost black. [...]
Yes! It's called QAC QR5. Dip the test paper into the solution for 1 second, and wait 5-10 seconds before comparing to the color chart.
Our test strips have been calibrated for use with all the commonly used hyamine and steramine quat (quaternary ammonium chloride) solutions. Some commercially available strips have errors as high as 50%. Use this guide to [...]