Dust masks must be tested by the National Institute of Occupational Safety and Health (NIOSH). NIOSH's testing conditions for fine particulate dust masks are among the most demanding conditions, which can help ensure that they have sufficient protective properties in the workplace. The test standards for dust masks include the use of high-ventilation flow and ultra-difficult-to-filter atmospheric aerosol particle size And atmospheric aerosols that can reduce the filtering characteristics of the filter material. The fine particulate dust respirator approved by this test must be printed with the word NIOSH and the approved filtration efficiency level. The most popular well-known brands of dust masks in the United States include 3M dust masks, Honeywell dust masks, etc. The protection levels from low to high are N95 dust masks and N99 dust masks. In Europe, respiratory protection products belong to the third category of personal protective equipment (PPE), that is, users will use the products to prevent fatal risks or extremely serious risks that can cause irreversible health damage. The commodity manufacturer believes that the user cannot perceive the instantaneous effect of the commodity for a long enough time. In accordance with the European PPE Directive 89/686/EEC, respiratory protection products must be tested by a European certification body in accordance with relevant European (EN) standards and be approved by EC. The testing conditions for fine-particle dust respirators in the EN standard are the most demanding conditions, which can help ensure that they also have adequate protective properties in the workplace. The test standards include the use of atmospheric aerosols with high air flow, ultra-difficult to filter particle size and can cause the filtration characteristics of the filter material to decrease. The European regional standard applicable to disposable fine particulate dust respirators is EN149:2001. Products tested according to this standard and approved by EC type must have the CE mark (including the certification body number), EN standard number and the level that meets the standard. , Such as FFP1, FFP2 or FFP3 dust masks. Well-known brands of dust masks that meet the European standard include Delta dust masks, 3M dust masks, etc. The protection levels from low to high are FFP1 dust masks, FFP2 dust masks and FFP3 dust masks. 240
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