Question 6007 of 229 · California Water Distribution Operator Exam
What is the maximum holding time for a total coliform sample before analysis?
Exactly one answer is correct.
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Correct answer to question 6007
- B: 30 hours
Explanation
The time from sample collection to the start of incubation may not exceed 30 hours (40 CFR 141.852(a)(3)). Keeping samples cold in transit is encouraged but not required.
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