Certified Pool Operator Practice Test

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What is the solid chlorine compound used when a slow release of chlorine over time is desired?

dichlor
hypochlorite
trichlor
zinc hypochlorite

The correct answer is: dichlor

When a slow release of chlorine over time is desired, a compound that is known as a "dichlor" is utilized. This is because dichlor typically refers to compounds such as sodium dichloride and lithium dichloride, which release chlorine at a relatively slow pace over an extended period of time. While all of the other options may be chlorine compounds, they do not typically provide a slow release of chlorine over time. Hypochlorite, for example, releases chlorine quickly and is better suited for immediate disinfection. Trichlor and zinc hypochlorite are both solid forms of chlorinated compounds but do not possess the same properties as dichlor when it comes to slow chlorine release. Therefore, the correct answer is A.