Agriculture Reference
In-Depth Information
Figur e 6.15
Assorted air-p urifying respi rators with organ ic vapor-filtering
cartridges (University of Wisconsin, 40-hour OSHA Training, 1991).
Pesticide handlers must use either:
•
Cartridge approved for organic vapor removal plus a prefilter approved
for pesticides (NIOSH/MSHA approval number prefix for both is
TC23C).
•
Canister approved for pesticides (NIOSH/MSHA approval number
prefix is 14G).
When you wear a vapor-removing respirator, remember that va-
por-removing materials gradually lose their ability to hold more gases and
vapors. Their useful life can vary greatly depending on:
•
the amount of particles in the air
•
the concentration of vapor being filtered
•
the amount of absorbent material they contain
•
the breathing rate of the wearer
•
the temperature and humidity
•
the length of time they have been stored before use and between uses.
If you notice an odor, taste, irritation, or dizziness, that is a signal that
you are no longer being protected. Some vapor-removing materials have a
"service life indicator" to tell when the material is nearly depleted. The in-
