The DEMETECH ASTM Level 3 mask passed our particulate filtration efficiency machine test with a score of 99.17%. This blue surgical mask is 3-ply and has ear loops instead of head straps or ties.
Mask breathability is determined by airflow resistance, which we measure in pascals. The target for adults should be around 150, and the target for children should be close to 100. The airflow resistance of this mask is 53.80.
The masks have a cardboard box odor, likely the result of them not being individually wrapped. The construction is solid. The breathability is excellent and the filtration is up there with 3M's N95 products.We found this mask on Amazon. Its country of origin is the USA. Check out our video review for more details.