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The classifying system consists of the three FFP classes,the abbreviation FFP stands for filtering facepiece.A respirator mask covers mouth and nose and is constructed of various filter materials and the mask itself.Their use is mandatory in working environments exceeding the occupational exposure limit value (OEL).Previous123456NextOxyBreath Pro ,page1.Masks for Bacteria and Virus ProtectionOct 11,2014 cheaper anti bacteria proof mouth mask standards from#0183;If you want the best mask for bacteria and virus protection,pick an N95 or an N99 mask.These are disposable masks that can protect you from airborne viruses and bacteria.Several governmental agencies set the standards for respiratory masks based on the needs for protection in the workplace.If you want to learn more about How the NIOSH and
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