... are being installed or tested, when nonroutine maintenance or repair is being accomplished, or during emergencies. ... [any air-purifying half-mask respirator equipped with an organic vapor cartridge(s) in combination with an N95, R95, anbsp;...
|Title||:||Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens|
|Author||:||Richard P. Pohanish|
|Publisher||:||William Andrew - 2012|