concluding that a supplied air respirator (SAR) is the way to go. His homebrew version consists of an affordable, commercially available plastic hood with a built-in visor. Rather than an ...

They are usually hoods of some type and are designed to be used for 15 to 60 minutes. Some manufacturers offer escape respirators in different sizes. Full-face respirators cover your nose ...

An air-supplied respirator includes biohazard suits that provide the wearer with a portable air tank. A full face respirator covers the entire face and also protects the eyes and face from irritants ...