Hood The hood of the Breath of Life™ mask is made from transparent 5-layered laminate and is resistant to penetration of particles, acids, alkalis, gases & microorganisms.

The filter is composed of four different layers.

 

First and Fourth Layers

Made from viscose strengthened by polyester fibers 150 gr/sq. m. Contains 0.3% Cetylpyridinium Chloride (CPC) as an antiseptic that neutralizes bacteria that may enter through the filter. The first layer acts as a pre-filter against large particles.

 

Second Layer

A second layer filters particles of 0.3 microns or more, tested for air permeability by the Frazier Air Permeability Method, - 55cfm/sf at 0.5" water Gauge.

 

A third layer is made of Polyester non-woven material, thickness: 1.2 mm, containing active charcoal in a concentration of 114 gr. out of a total of 200 gr. Sq/m. - 57% intended to reject air pollution and gas flow, both in dynamic or static conditions. Active charcoal is described as follows in professional literature: "activated charcoal are used as purifying and decolorizing agents, for the removal of residual gases in low pressure apparatus, and in respirators as a protection against toxic gases." Tests were conducted on this layer conforming to Standard SAE J 726 / ISO 12103/A Coarse Grade Test Dust, with the following results: With airflow of 10 cub. ft. per minute for 15 minutes containing 16.0 gr. of dust, out of which 14.6 gr. (91.25%) were absorbed by the charcoal layer.

 

Note: Characteristics not mentioned as tested and proven, should not be attributed to the filter.