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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Oxidation Reduction Potential (ORP) testing is measured in what units?

MV
PSI
PPM
Watts

The correct answer is: MV

ORP testing measures the oxidation reduction potential and is represented by the symbol E. The unit of measurement for ORP is millivolts (mV). In contrast, PSI (pounds per square inch) is a unit for measuring pressure, PPM (parts per million) is a unit for measuring concentration, and Watts is a unit for measuring power. Therefore, options B, C, and D are incorrect as they measure different properties that are not relevant to ORP testing.