Description :

Notes 1 employers may select respirators assigned for use in higher workplace concentrations of a hazardous substance for use at lower concentrations of that substance or when required respirator use is independent of concentration 2 the assigned protection factors in table 1 are only effective when the employer implements a continuing effective respirator program as required by this . Notes 1 employers may select respirators assigned for use in higher workplace concentrations of a hazardous substance for use at lower concentrations of that substance or when required respirator use is independent of concentration 2 the assigned protection factors in table 1 are only effective when the employer implements a continuing effective respirator program as required by this . Most of the osha air contaminant limits are based on recommendation made over 30 years ago and more recent studies frequently identify the health need for more protection in addition the osha pels cover fewer than 500 substances and consequently exposures to many hazardous substances are not even regulated with any numerical exposure limits. A respirator cant protect you if it doesnt fit your face certain respirators known as tight fitting respirators must form a tight seal with your face or neck to work properly according to osha if your respirator doesnt fit your face properly contaminated air can leak into your respirator facepiece and you could breathe in hazardous substances