Moldex&reg; Medium - Large N100 Disposable Particulate Respirator With Ventex&reg; Exhalation Valve, HandyStrap&reg; And Dura-Mesh&reg; Shell - Meets NIOSH, ANSI, ISEA And OSHA Standards Moldex Medium - Large N100 Disposable Particulate Respirator With Ventex Exhalation Valve, HandyStrap And Dura-Mesh Shell - Meets NIOSH, ANSI, ISEA And OSHA Standards In environments where an OSHA substance specific standard applies (lead, cadmium, arsenic, MDA) as well as pharmaceutical manufacturing, battery manufacturing, welding, cutting and metal pouring. May be considered for hantavirus; consult with your local health department first. No oils present.