Michigan Certified Pesticide Category 6J Practice Test

When applying pesticides using a tight-fitting respirator, what should you do before starting?

Conduct a qualitative fit test. Perform seal checks. Put Vaseline on the edges of the respirator to enhance the seal. Skip any seal checks.

Correct Answer:

Perform seal checks.

Explanation:

A tight-fitting respirator must form a real seal against your face to keep pesticide vapors from bypassing the filter, so you should verify that seal before you begin. Performing seal checks is a quick, practical step that confirms the facepiece fits correctly and that there are no leaks as you breathe in and out. A qualitative fit test is a longer, formal assessment used to establish overall fit under test conditions, not the immediate daily precaution you take before spraying. Using Vaseline on the edges is not appropriate because it can compromise the seal and contaminate the work area. Skipping seal checks is dangerous and not acceptable. So, you should perform seal checks before starting.

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