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The European respirator standards refer to the filtering classification by EN 149, EN 14683, and EN 143, all European standards of testing and marking requirements for respirators. [1] FFP standard masks (where FFP stands for filtering facepiece) [ 2 ] cover the nose, mouth and chin and may have inhalation and/or exhalation valves.
Performance data and safety-related requirements for active respiratory gas humidifiers are specified by the standard ISO 8185. According to that standard, the minimum water content of inspired respiratory gas is ca. 33 mg/dm³ and the maximum respiratory gas temperature is ca. 42 °C.
Similar requirements exist in the standard on occupational safety, governing selection and application of RPD in EU. [69] In England a tutorial on the selection and use of respirators recommends obtaining information from the manufacturer, and replacing the cartridges on a schedule or use ESLI, and prohibits reusing cartridges after exposure of ...
See: venturi mask air-filtering respirator An air-filtering respirator is a breathing apparatus which removes particulates from the ambient air by passing it through a filter. air-purifying respirator An air-purifying respirator is a respirator which uses a filter, cartridge, or canister to remove specific air contaminants by passing ambient air through the air-purifying component ...
P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P304+P341: IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing. P305: IF IN EYES: P305+P351+P338: IF IN EYES: Rinse continuously with water for several minutes. Remove ...
Example of measurement of efficiency of the respirator (in the workplace). Description: (1) personal sampling pump, (2) the cassette and the filter for determining the concentration (in the breathing zone), (3) the sampling line (from the breathing zone), (4) the cassette and the filter to determine the concentration (under a mask), and (5) the sampling line (from the mask).
The normal relaxed state of the lung and chest is partially empty. Further exhalation requires muscular work. Inhalation is an active process requiring work. [4] Some of this work is to overcome frictional resistance to flow, and part is used to deform elastic tissues, and is stored as potential energy, which is recovered during the passive process of exhalation, Tidal breathing is breathing ...
May cause allergy or asthma symptoms or breathing difficulties if inhaled H335: May cause respiratory irritation H336: May cause drowsiness or dizziness H340: May cause genetic defects H341: Suspected of causing genetic defects H350: May cause cancer H350i: May cause cancer by inhalation H351: Suspected of causing cancer H360