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2.
Never use this respirator:
•
To perform or observe sand-blasting/abrasive-blasting or welding;
•
To fight fires;
•
In oxygen deficient atmospheres (any atmosphere having less than 19.5% oxygen by volume at sea level);
•
In atmospheres rich in oxygen;
•
In explosive atmospheres;
•
In atmospheres where the concentrations of toxic contaminants are unknown, or are Immediately Dangerous to
Life or Health (IDLH). An IDLH atmosphere is any atmosphere which has a concentration of any toxic, corrosive
or asphyxiant substance that poses an immediate threat to life, which would cause irreversible debilitating
effects on health, or which would interfere with the ability to escape from a dangerous atmosphere.
•
In atmospheres where the concentration of the contaminant exceeds:
i. If part of an OSHA or CSA Respiratory Protection Program:
•
50 times the contaminant's permissible exposure limit (PEL). PEL is defined as the maximum
permissible 8-hour time weighted average (TWA) concentration established by applicable OSHA or
other government regulations, or by NIOSH, ACGIH or CSA.
•
Any lower Maximum Use Concentration for that contaminant established by OSHA or other
government regulations, NIOSH, ACGIH or CSA publications, or shown in the contaminant's Material
Safety Data Sheet.
ii. If part of a Worksafe Australia Respiratory Protection Program:
•
In atmospheres where the concentration of the contaminant exceeds 10 times the contaminant's
permissible exposure limit set by Worksafe Australia or other government regulations.
iii. If part of a Brazilian Ministry of Labor (MTE) Respiratory Protection Program:
•
In atmospheres where the concentration of the contaminant exceeds 100 times the contaminant's
permissible exposure limit set by NR 15 or other government regulations.
•
With any filters or cartridges other than those certified for use with this facepiece by the appropriate certifying
organization.
•
To protect against contaminants not listed on the label for that filter or cartridge:
i. If part of an OSHA or CSA Respiratory Protection Program the label is the NIOSH Approval label included
with NIOSH approved cartridges and included with these User Instructions.
5
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