Conversion of self-contained breathing apparatus mask to open source powered air-purifying particulate respirator for fire fighter COVID-19 response - ScienceDirect
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Conversion of self-contained breathing apparatus mask to open source powered air-purifying particulate respirator for fire fighter COVID-19 response - ScienceDirect
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So its been hot so i finished a project I wanted to, Forced carbon filtered air into 3m mask that fits under grinder/welder helmets. : r/Welding
