A self-contained breathing apparatus (SCBA) is a type of respirator that contains breathable compressed air. They are used by firefighters and by others who may be working in areas filled with smoke, toxic gas or other contaminants that are immediately dangerous to life and health (IDLH). There are a number of types of SCBAs. This document will focus, primarily, on open circuit, positive pressure-demand SCBAs. This is the type worn by firefighters and the most commonly used SCBA. With a purchase price generally well above a thousand dollars, a positive pressure-demand SCBA respirator represents a substantial financial investment. Before purchasing a […]
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