CPO (Certified Pool Operator Exam) Practice Test
CPO CPO Pool Equipment and Mechanical Systems Questions and Answers 3
What is diatomaceous earth (DE) used for in pool filtration?
Select your answer
A
A pH-buffering chemical added to pool water
B
A fossil-based powder that coats filter grids to trap fine particles
C
A flocculant to clarify cloudy water
D
A scale inhibitor for pool surfaces
Hint