[Expert Solution]: Which four of the following statements are…

Which four of the following statements are correct? geoquad Personnel required to wear a respirator are also required to have a respirator fit test annually. geoquad Employees must be trained in the proper use of air purifying respirators. geoquad An oxygen deficient atmosphere is anything with O2 less than 19.5%. geoquad A perlodic positive and negative fit test should be performed to ensure the respirator seals properly. geoquad SAR’s provide a high level of user protection and allow for a continuous air supply from either bottles or a breathing-air compressor. geoquad Organic vapor cartridges are used for atmospheres with hydrocarbons, solvents, gasoline and H2S.