CMA CMA Equipment & Tools 2

Question 1

Why must moisture meters be calibrated to the specific material being tested?

Accepted Answer

Moisture's electrical properties vary by material type, so species/material-specific calibration curves ensure accuracy

Answer

Electrical resistance varies by material species and density; a reading taken with a softwood calibration setting will be inaccurate when testing hardwood or drywall, leading to incorrect moisture content values.

Question 2

What type of containment equipment is used to create negative pressure during mold remediation, and how does it protect the assessor during inspection?

Accepted Answer

Negative air machines with HEPA filtration; assessors verify the containment is functional before entering

Answer

Negative air machines (exhaust fans with HEPA filters) exhaust air from the containment zone, creating negative pressure that prevents spore migration; assessors verify these are running before entering active remediation zones.

Question 3

What is the primary purpose of a HEPA vacuum during mold remediation, and how is this relevant to post-remediation assessment?

Accepted Answer

HEPA vacuums capture particles ≥0.3 microns including mold spores; assessors verify their use as part of clearance

Answer

HEPA vacuums capture 99.97% of particles ≥0.3 microns including mold spores, preventing spore redistribution during cleanup; assessors confirm they were used as part of the remediation protocol verification.

Question 4

When should an assessor replace the sampling head cassette on a portable air sampling pump?

Accepted Answer

Each time a new air sample is collected, to prevent cross-contamination between sample locations

Answer

Each air sample requires a new, unused cassette (spore trap or filter) to prevent cross-contamination between samples and ensure accurate results from each location.

Question 5

What is the function of a Tyvek suit (Category III Type 5/6 coverall) when worn by a mold assessor?

Accepted Answer

To protect the assessor's clothing and skin from mold spore contact and to prevent cross-contamination of samples

Answer

Disposable Tyvek coveralls prevent mold spores from contaminating the assessor's skin and clothing, and prevent the assessor from inadvertently transferring spores from one area to another during inspection.

(CMA) Certified Mold Assessor Practice Test

(CMA) Certified Mold Assessor Practice Test

CMA CMA Equipment & Tools 2