Agriculture Reference
In-Depth Information
Fig ure 6.1 4
Air-purfying res pirat or-half mas k. Worker is als o wearing
goggles with indirect air vents and a large brimmed hat for protection (courtesy
of University of Wisconsin-Extension).
When wearing a dust/mist filter mask, cartridge, or prefilter, you will
have more trouble breathing as more dusts, mists, and other particles become
trapped in the filter material. When breathing becomes too difficult, replace
the filter. Eight hours of use is usually the limit for these filters. During
continual use, you may need to change filters twice a day, or even more often
in dusty or dirty conditions. Do not use a dust/mist mask when the pesticide
will completely soak the mask and be held close to the skin and breathing
passages. Replace the mask if it gets soaked or loses its shape.
Figure 6.15
illustrates the assortment of APRs available in the market place.
b.
Selecting and Using Vapor-Removing Devices
Vapor-removing devices are rated by NIOSH for the types of gases and
vapors they will remove. For pesticide-handling tasks where vapor protection
is needed, NIOSH requires that an organic vapor-removing material and a pes-
ticide prefilter be used.
