A new study raises questions about the safety of the growing trend toward equipping carbon canister protective breathing devices with a blower device to enable personnel to breathe easier. Marco J. G. Linders and colleagues in The Netherlands point out that such respiratory protective devices (RPDs) traditionally are operated by human lungs. The inhale-exhale cycle results in a pulsating pattern of air flow over the activated carbon filter material. [click link for full article]
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