Gas Mask Protective Eyes Skin Respiratory

The MF205B gas mask is designed to protect personnel's head, face and respiratory tract from harm caused by radioactive dust, chemical agents and biological warfare agents, ensuring the safety of emergency rescue operations. It can be used in combination with breathable anti-toxic suits, anti-toxic gloves, anti-toxic boot covers, etc., to achieve a complete personal nuclear, chemical and biological protection state.

a) Protection time
The protection time against mustard gas shall not be less than 360 minutes.
The protection time against cyanide chloride shall not be less than 30 minutes.
The protection time against cyclohexane, ammonia, cyanide chloride, formaldehyde, hydrogen cyanide, hydrogen sulfide, nitrogen dioxide, phosgene, phosphine and sulfur dioxide shall not be less than 30 minutes.
The filtration efficiency for toxic and harmful aerosols and nuclear radioactive dust shall not be less than 99.975%.
b) Intake resistance
Not exceeding 160Pa under a constant airflow of 30L/min;
Not exceeding 430Pa under a constant airflow of 85L/min.
c) Expiratory resistance
Not exceeding 150Pa under a constant airflow of 85L/min.
d) Field of vision
The total field of view shall not be lower than 80%.
The binocular field of vision should be no less than 55%.
The lower field of view should be no less than 35°.
e) Overall protective performance
The protection factor shall not be less than 1×104.
f) The exhalation valve of the mask
When the pressure of the exhalation valve is reduced to -1180 Pa, the pressure value drop within 1 minute should not exceed 350Pa.
g) Dead cavity
No more than 1%.
h) The mask has a strong combination with the filter element
Not less than 250N.
i) Headband strength
Not less than 150N.
j) Insulation performance
Under environmental conditions ranging from -25 to 35℃, the lenses do not fog up or the fogging does not affect the person's observation ability when worn.
k) Call performance
It has the function of voice communication and an interface for electro-acoustic communication devices.
l) Matching
It can be used in conjunction with emergency rescue helmets and non-airtight protective suits.
m) Safety
The materials of each component are non-toxic and harmless. Materials in contact with the skin have no irritating effect on the skin.
n) Size setting: Single number.
o) Color: Black.
p) Storage life: not less than 10 years.

a) Protection time
The protection time against mustard gas shall not be less than 360 minutes.
The protection time against cyanide chloride shall not be less than 30 minutes.
The protection time against cyclohexane, ammonia, cyanide chloride, formaldehyde, hydrogen cyanide, hydrogen sulfide, nitrogen dioxide, phosgene, phosphine and sulfur dioxide shall not be less than 30 minutes.
The filtration efficiency for toxic and harmful aerosols and nuclear radioactive dust shall not be less than 99.975%.
b) Intake resistance
Not exceeding 160Pa under a constant airflow of 30L/min;
Not exceeding 430Pa under a constant airflow of 85L/min.
c) Expiratory resistance
Not exceeding 150Pa under a constant airflow of 85L/min.
d) Field of vision
The total field of view shall not be lower than 80%.
The binocular field of vision should be no less than 55%.
The lower field of view should be no less than 35°.
e) Overall protective performance
The protection factor shall not be less than 1×104.
f) The exhalation valve of the mask
When the pressure of the exhalation valve is reduced to -1180 Pa, the pressure value drop within 1 minute should not exceed 350Pa.
g) Dead cavity
No more than 1%.
h) The mask has a strong combination with the filter element
Not less than 250N.
i) Headband strength
Not less than 150N.
j) Insulation performance
Under environmental conditions ranging from -25 to 35℃, the lenses do not fog up or the fogging does not affect the person's observation ability when worn.
k) Call performance
It has the function of voice communication and an interface for electro-acoustic communication devices.
l) Matching
It can be used in conjunction with emergency rescue helmets and non-airtight protective suits.
m) Safety
The materials of each component are non-toxic and harmless. Materials in contact with the skin have no irritating effect on the skin.
n) Size setting: Single number.
o) Color: Black.
p) Storage life: not less than 5 years.

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