the addition of a sufficient amount of chlorine to water to destroy the combined inorganic chlorine present. Normally, the amount added is equal to ten times or more the combined chlorine concentration. (N)
the amount of chlorine required to completely oxidize all of the organic materials and decompose all of the combined chlorine present in the pool or spa water. An amount of chlorine, 5-10 times the combined chlorine level, is typically required.
Addition of chlorine to water until the chlorine demand has been satisfied.
Adding enough chlorine to completely oxidize organic matter, ammonia and nitrogen compounds, any chlorine added beyond this point is free available chlorine.
Chloramines are undesirable in pool water. Monochloramine is not a great problem as it does not irritate and has some sanitizing value. Dichloramine however irritates the eyes and nose and is the source of complaints attributed to chlorine generally. When measuring total chlorine the value attributable to Monochloramine + Dichloramine + Free Chlorine will rise as more chlorine donor is added. When sufficient is present the chloramines will decompose and the combined chlorine level will fall whilst the free chlorine continues to rise. This is known as the breakpoint and is an indication that the chloramines have been oxidized.
The process of adding sufficient free available chlorine to completely oxidize all organic matter and ammonia or nitrogen compounds. All chlorine added after that point is free available chlorine. Requires a ratio of chlorine to ammonia of 7.6:1 but it is easier and leaves a chlorine residual to multiply the combined chlorine or ammonia content by 10 and add that as free chlorine to reach breakpoint.
When you shock your pool, the goal is to reach a high enough level of free chlorine, measured in ppm, to break apart molecular bonds, specifically the combined chlorine molecules. When breakpoint is reached with sufficient additions of chlorine, everything in the pool is oxidized.
the point at which a specific quantity of chlorine product is added to a pool destroy ALL chloramines present, determined after running a proper Chlorine Demand test (normally the total amount of chloramines times 10 of the amount of Free Available Chlorine, per 10,000 gallons) .
When you shock treat your pool, the goal is to reach a high enough level of free chlorine to break apart all molecular bonds; specifically the combined chlorine molecules, ammonia or nitrogen compounds and to completely oxidise all organic matter. Adding enough chlorine to achieve this is breakpoint chlorination. Chlorine added after that point will be free available chlorine.
A chlorination procedure in which the chlorine is added until the chlorine demand is satisfied and a chlorine residual occurs.