1. FFP standard: European standard for respiratory protection. The following are the specific parameters of the standard:

 

CE149:2001 test, test model: tsi8130

 

Test substance: NOCl & DOP particle size: 0.3um test flow rate: 95L / min

 

Grade: permeability, capture rate, resistant impedance

 

FFP1 20% ≥80% 21MM H20

FFP2 6% ≥94% 24MM H20

FFP3 1% ≥99% 30MM H20

 

 

2. N standard: American Standard for respiratory protection. The following are the specific parameters of the standard:

 

NIOSH Standard Test Model: TSI8130

 

Test substance: NaCl particle size: 0.3um test flow rate: 85L / min

 

Grade: permeability, capture rate, resistant impedance

 

N95 5% ≥95% 35MM H20

N99 1% ≥99% 35MM H20

N100 0.03% ≥99.99% 35MM H20

 

Remarks: NAC: sodium chloride (table salt) DOP: paraffin oil

 

Both tests use the same machine, using NaCl as the test pollutant, and mixing DOP represents the protection against oily dust

 

In FFP2 standard, the dust collection rate of respirator is more than 94% and less than one percentage point of N95. However, the air flow passing in minutes is different

 

The European standard is 95 L / min, the American standard is 85 L / min. at the same time, the impedance value represents the obstruction degree of respirator to breath when using respirator. The larger the value is, the more obstruction the breath is. The comfort degree of the two is different. It can be seen from the data that FFP2 NR standard is more comfortable than N95 standard.