Mask Filter Tests

All STYLESEAL filters are independently tested at Nelson Labs, USA and conforms to the ASTM F2100 standard at a particle size of 0.1 microns. You can read about our different filter types here.

The filters go through a variety of tests including:

• Particle Filtration Efficiency (PFE)
• Bacterial Filtration Efficiency (BFE)
• Viral Filtration Efficiency (VFE)

This is your guarantee that STYLESEAL Air Masks provide you the protection you need. All results of these tests can be found below:

Filter Type	80S	90S	95S	99S
Particle Filtration Efficiency (PFE)	>99.2%	>98.3%	>99.4%	>99.2%
Bacterial Filtration Efficiency (BFE)	>99.9%	>99.9%	>99.9%	>99.9%
Viral Filtration Efficiency (VFE)	>98.1%	>98.2%	>98.2%	>98.2%

Particle Filtration Efficiency (PFE)

80S	90S
95S	99S