“…Respiratory protection can vary from simple respirators which simply filter particles out of the air to completely self-contained or supplied air masks. Respirators should be in a form approved by a recognized laboratory for the type of service involved [56]. The limitations of the respiratory equipment must be known before use.…”
“…Respiratory protection can vary from simple respirators which simply filter particles out of the air to completely self-contained or supplied air masks. Respirators should be in a form approved by a recognized laboratory for the type of service involved [56]. The limitations of the respiratory equipment must be known before use.…”
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