Description of respiratory protection standards FFP2 and N95 comparison
Description of respiratory protection standards
Comparison of FFP2 and N95
The national standards of dust cover in various countries are different, and each has its own emphasis in comparison. In terms of antivirus prevention, China's CDC requires that occupational exposure workers in the epidemic protection level II,
The filter standard of the mask should be FFP2 or N95. In view of the domestic FP standard is still insufficient, now spinning filter material to do a brief comparison of the two
1) FP standard: namely the European standard of respiratory protection.
The following are the specific parameters of the standard
CE149:2001 Test: Test model :TS18130
Particle size of test material
Test flow rate :95LMin
2) N standard: is the American standard of respiratory protection. The following are the specific parameters of the standard
N | OSH standard, testing model: TS18130
Test material: NaC | size: 0.3 um testing velocity: 85 l/Min
Note: NAC: sodium chloride (table salt); D P: Paraffin oil
The same machine is used for both tests. NAC is used as the pollutant for testing, and DOP is mixed to represent OK
To protect against oily dust. According to the FP2 standard, the dust collection rate of the mask is greater than or equal to 94%, which is less than N95
The capture rate is one percent. However, the gas flow rate passed per minute during the test is different. The European standard is 95 litres per minute
The American standard is 85 liters per minute. At the same time, the impedance value represents the degree of obstruction to breathing when using the mask.
The higher the value, the more obstructed the breathing, and the comfort degree of the two is different.