Answer:
The Honeywell 5500 Series elastomeric half mask carries an Assigned Protection Factor (APF) of 10 in air-purifying respirator (APR) mode under OSHA standards when fitted correctly.
The Honeywell 5500 Series half-mask respirator delivers an Assigned Protection Factor (APF) of 10 in standard Air-Purifying Respirator (APR) mode pursuant to OSHA respiratory protection regulations. This rating indicates the mask reduces ambient contaminant exposure by a factor of 10 when properly selected, donned, and fit-tested.
Key structural and aerodynamic specifications include:
- Operating Atmosphere: Suitable for non-IDLH (Immediately Dangerous to Life or Health) atmospheres containing at least 19.5% oxygen by volume.
- Dead Air Space: Engineered with a low dead air space interior to restrict carbon dioxide accumulation and reduce the re-breathing of exhaled air.
- Harness Assembly: Four-point suspension harness with an integrated crown cradle and lower elastic neck straps to maintain sealing tension without localized pressure points.
