Most of all, he must don a respirator. A supplied air respirator (SAR) is often recommended but new evidence demonstrates that cartridge respirators with natural and organic vapor cartridges and pads for overspray, if appropriately equipped and worn, may also correctly avoid solvent and isocyanate inhalation. Read extra… 23 http://spray-booth-installers-sy13568.blogvivi.com/695797/the-greatest-guide-to-semi-downdraft-spray-booth