MPS' Reagan High School on the south side and Rufus King on the north side rounded out the top three high schools in the state, according to the rankings. Other Milwaukee charter schools and Milwaukee metro schools also made the list: 1. Middleton High School, Middleton. 2.
Chlorine sanitizing solutions should be at a minimum temperature of 75Â°F. They are less effective at lower temperatures. At temperatures higher than 120Â°F chlorine may evaporate from the solution and corrode certain metals. In general all sanitizers work best at temperatures between 75Â° and 120Â°F.
Chlorine and quaternary ammonium sanitizers are the most common in food service. Chlorine-based sanitizers should be 50-100 parts per million (ppmâs) concentration and contact time is 7 seconds or more. Quaternary based sanitizers are usually 150 to 200 ppmâs concentration and 30 seconds contact time.