Certified Pool Operator Practice Test

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Study for the Certified Pool Operator Test. Prepare with comprehensive flashcards and multiple-choice questions. Each question includes hints and detailed explanations. Get ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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For a 28,000-gallon hotel pool with a Calcium Hardness of 100 ppm, how much calcium chloride (77%) would be required to increase it to 400 ppm?

75.6 lbs.
80 lbs.
90.2 lbs.
100.8 lbs.

The correct answer is: 100.8 lbs.

To increase the Calcium Hardness of a 28,000-gallon pool from 100 ppm to 400 ppm, a large amount of calcium chloride is needed. Calcium chloride is a chemical compound that is commonly used to increase the Calcium Hardness in swimming pools. It is available in different concentrations, with the 77% concentration being the most common. In this scenario, the highest amount of calcium chloride is required, which is 100.8 lbs. Option A, B, and C are incorrect because they are lower amounts and would not be enough to increase the Calcium Hardness to 400 ppm.