Independently tested by the Particle Measurement and Technology Laboratory at the Missouri University of Science and Technology (USA), the LOG3Mask is a unique three-layer design with filtration efficiency, superior to surgical/medical masks for particle size 200 nm-5000 nm and reaches over 95% PFE for particles over 500 nm (Scientific studies showed that most coronavirus aerosols are in the size range of 250 nm to 5000 nm).

Read the Particle Filtration Efficiency Lab Testing Report