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<br /> / RESPIRATORY PROTECTION FOR METHYLENE CHLORIDE
<br /> Condition Minimum Respiratory Protection"
<br /> Required Above 500 ppm
<br /> Vapor Concentration
<br /> 5000 ppm or less Any supplied-air respirator with a full facepiece, helmet, or hood.
<br /> Any self-contained breathing apparatus with a full facepiece.
<br /> Greater than 5000 ppm or Self-contained breathing apparatus with a full facepiece operated in pressure-
<br /> entry and escape from demand or other positive pressure mode.
<br /> unknown concentrations
<br /> A combination respirator which includes a Type C supplied-air respirator with a
<br /> full facepiece operated in pressure-demand or other positive pressure or continu-
<br /> ous-flow mode and an auxiliary self-contained breathing apparatus operated in
<br /> pressure-demand or other positive pressure mode.
<br /> Fire Fighting Self-contained breathing apparatus with a full facepiece operated in pressure-
<br /> demand or other positive pressure mode.
<br /> Escape Any gas mask providing protection against organic vapors.
<br /> CAny escape self-contained breathing apparatus.
<br /> 'Only NIOSH-approved or MSHA-approved equipment should be used.
<br /> September 1978 Methylene Chloride 5
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