Certified Pool Operator Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

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!

Practice this question and more.

Why is DPD preferred over OTO for testing Chlorine/Bromine in a commercial pool?

DPD is more cost-effective
DPD reacts faster
DPD only tests for Free Chlorine
OTO only tests for Total Chlorine

The correct answer is: DPD is more cost-effective

DPD is preferred over OTO for testing Chlorine/Bromine in a commercial pool because it is more cost-effective. DPD is able to test for both free and combined chlorine, whereas OTO can only test for total chlorine. This means that DPD provides a more accurate and comprehensive understanding of chlorine levels in the pool. Additionally, DPD reacts faster than OTO, allowing for quicker and more efficient testing.