Temperature will slightly affect the performance. The 145 chlorine test papers (0-200ppm) have been checked in solutions up to 70°C (158°F). At temperatures above 50°C, a 10ppm solution will not develop as much color as [...]
Chlorine is one of the most popular chemicals for cleaning, sanitizing, and disinfecting. Two common examples will help illustrate this. Swimming pools are often treated with chlorine chemicals. In this application, the amount of chlorine [...]
There are many online calculators that can help with this. A general rule of thumb is that 1 tablespoon of bleach in 1 gallon of water will yield a solution that is approximately 200 ppm [...]
The chlorine test paper will darken over time, so it is best to compare the color as directed (immediately after dipping into solution). Also, be aware that if two strips are stuck together, the color [...]
All available chlorine has some biocide strength, although hypochlorous acid is a far stronger biocide than hypochlorite ion or the chloramines. In solutions at pH of 5-7, hypochlorous acid is the most prevalent species. For [...]
When chlorine gas (Cl2) or bleach (sodium hypochlorite or NaOCl) is added to water the result is the formation of hypochlorous acid (HClO). Cl2 + H2O -> HOCl + H+ + Cl- NaOCl +H2O -> [...]
If you believe that the solution you are using contains chlorine and yet after testing it with chlorine test paper, the strip is still white, you may be seeing what is referred to as the [...]
Testing should be done at least once daily in smaller restaurants, and more frequently in busy establishments as each time the rinse solution is used, it will get slightly diluted.
This depends upon your local health code. In many areas, the level is 50-100ppm available chlorine. It is best to check with your local health inspector for the level required in your area. Federal regulations [...]