Question 4002 of 223 · California Water Treatment Operator Exam
Why is the sample tap flame-sterilized or disinfected before collecting a bacteriological sample?
Exactly one answer is correct.
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Correct answer to question 4002
- D: To prevent contamination from the tap from affecting the result
Explanation
The sample should represent the water in the system, not microorganisms on the faucet. Operators also flush the line before sampling.
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