Praxis 5005 Practice Test Practice Question
Which of the following is most important to achieving an accurate result when performing a coliform test on water samples?
Correct Answer: B
Rationale: Achieving accurate results in a coliform test relies heavily on proper sterilization of equipment. Properly sterilized tools prevent contamination that could skew results, ensuring that any detected coliforms originate solely from the water sample being tested.
Boiling samples (Option A) is unnecessary and could alter the sample's integrity. Using samples over 24 hours old (Option C) can lead to the growth of additional bacteria, compromising results. Sampling from moving water (Option D) does not inherently improve accuracy; contamination can occur in any water source. Thus, sterilization is vital for reliable testing.
Unlock All Questions
Subscribe to Premium for full access to all practice questions, detailed rationales, and performance tracking.
Subscribe Now