Question 4013 of 223 · California Water Treatment Operator Exam
Which of the following will give a false high turbidity reading?
Exactly one answer is correct.
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Correct answer to question 4013
- C: Air bubbles in the sample vial or scratches and fingerprints on the vial
Explanation
Bubbles, dirt and smudges scatter light. Operators should wipe the vial, let bubbles clear and use consistent technique.
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