What is the definition of a “breathing zone?” How is sampling in the breathing zone achieved?

  1. Interviews with workers can provide some of the best information about hazard information. What are four questions workers should be asked to help evaluate hazards and adequacy of controls?
  2. The number of samples that needs to be collected depends on three factors. What are those factors?
  3. What is the definition of a “breathing zone?” How is sampling in the breathing zone achieved?
  4. What are the advantages and disadvantages of grab sampling (name at least 2 each)?
  5. What are the benefits and limitations of colorimetric detector tubes (name at least 2 benefits and 3 limitations)?
  6. Far too often, industrial hygienists rely on direct reading instrument results without understanding all the calibration requirements, limitations, interferences, and errors potentially associated with a particular instrument. Discuss some of these factors affecting the results, and what steps an industrial hygienist should take to ensure the results they are obtaining are accurate and precise.