Question 6006 of 229 · California Water Distribution Operator Exam

Which sampling technique helps avoid contaminating a coliform sample?

Exactly one answer is correct.

Show solution

Correct answer to question 6006

  • A: Do not touch the inside of the bottle or cap; use a clean tap

Explanation

Contamination during collection can cause a false positive. Remove aerators, run the water and keep the bottle sterile.

Next to question ›