![]() ![]() The Type 80 was used on the Shalon Model 4 (Israel) and Model 4A1 (Israel) respirators, licensed copies of the Drager Simplex. It is specially designed for comfort and extended use at a minimal physiological load, having low breathing resistance and low weight. Class 3: For a gas content of less than 1% by volume. The Type 80 filters where used on all Israeli masks both civilian and military.Class 2: Cartridge filter (example: A2B2 or ABEK2) - medium capacity, gas content less than 0.5% by volume.Class 1: Wafer filter (example A1 or ABEK1) - small capacity and low efficiency, gas content below 0.1% by volume.Find out how each of the different types of gas. According to these parameters, here are the three classes of efficiency of gas filters: Types of Gas Masks - Gas mask types include half-mask air-purifying respirators and full-face respirators. Powered respirators use a motor to pass air through the filter to give a supply of clean air to the wearer. P100 filtration is the highest level of particulate. The negative pressure particulate categories are based facepiece. 3M (brand) 7093CN Filters - These P-100 filters are the industry standard in particulate filtration. Similarly, for each gas or family of gases, there are three classes of respiratory protection efficiency, defined by the EN143 and EN143/A1 standards:ĭepending on the type of filtering device, the maximum permissible concentrations of toxic substances (gases or vapors) will be different, i.e., 50 x OEL for half-masks and 2000 x OEL for full-face masks. Non-powered respirators rely on the wearers breathing to draw air through the filter. As per AS/NZS 1715 there are 3 different classes of particulate filters, P1, P2 and P3. A marking comprising a letter associated with a color indicates each type of filter, specific to each gas or family of gases according to the European standard EN14687. There are different types of anti-gas filters depending on the nature of the gas or vapor. ![]()
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