MGT 401 Week 3 DQ 2 Supplied-Air Respirator (S.A.R.) vs. Air-Purifying Respirator (A.P.R) Check this A+ tutorial guideline at respirator-(s.a.r.)-vs.-air-purifying-respirator-(a.p.r) What are the advantages and disadvantages of the S.A.R. versus the A.P.R.? What questions should you ask prior to selecting a respirator? Respond to at least two of your classmates’ postings. For more classes visit