The UNIXAir 113V FFP3 R D moulded filter half mask has an exhalation valve.
The half-mask is designed to protect human respiratory organs from various types of aerosols, dust (mineral, metallic, animal, vegetable, synthetic detergent dust, etc.) in the air of the working area.
The half-mask is used in all climatic zones IV (1) - IA ("special") at ambient temperature from minus 10 to plus 40°?.
The volume fraction of free oxygen in the air of the working zone should be not less than 17% and aerosol concentration: not more than 300 mg/m3 for high protection efficiency.
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