3m9022 mask

/Foldable particle protective mask
●Passed Chinese

and Australian
New Zealand
/
standards
●
Specially designed for Chinese people
,
Completely fit the face
,
Bendable nose clip
,
Ensure the best fit between the mask and the face Tightly sealed
●
Electrostatic filter cotton
,
High efficiency filtration
,
Low breathing resistance
●
Foldable
,
Easy to store
,
Economical and durable
,
Light weight
,
Comfortable to wear

United States (National Institute for Occupational Safety and Health) Respiratory Protective Equipment Standard Certification
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Series: Can be used to protect non-oily particles, no time limit for use

R Series: Available To protect non-oily and oil-containing particles, there is a limit on the use time for oil-containing particles (hours)

Series: Can be used to protect non-oily and oil-containing particles, the use time for oil-containing particles is 3 Recommendation: accumulated usage hours, or usage hours working shift, whichever arrives early
Filter materials are divided into three grades according to filtration effect:
<
Grade: lowest filtration efficiency

Level: lowest filtration efficiency

Level: lowest filtration efficiency

For example:

means: can be used to protect non- Oily particles

Indicates: the filtration efficiency can reach the minimum

The filtration efficiency is tested in micron particle size, and the flow rate is liters/minute