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66
be taken to prevent skin and eye contact
to avoid invalidating the OEL.
• For a more detailed explanation of TLVs
and their proper
application, refer to the
TLV booklet available for a nominal fee
from ACGIH, 1330 Kemper Meadow
Drive, Cincinnati, OH 45240
www.acgih.org.
Odor Threshold
Odor thresholds have been removed
from this version of the guide. While
contaminant odor or irritation may serve
as a secondary indicator of when to
change cartridges, it cannot be used as
the primary indicator for when to
change.
For more information on odor thresholds,
please see relevant publications such as
“Odor Thresholds for Chemicals with
Established Health Standards, Second
Edition. AIHA (2013).”
Respirator Type
This column lists the suggested type of
particulate, gas/vapor, or supplied air
respirator. The abbreviations used are
explained at the end of this document.
Not all of these respirators have been
specifically tested against each compound
listed. Either specific testing or a review of
chemical and physical properties of the
materials, as well as adsorption or filtration
characteristics of the respirators, forms
the basis for the recommendations.
6
The recommendations are for single
substances. When two or more
substances are present, a combination
respirator may be appropriate. For
example, with a spray paint that contains
organic solvents and titanium dioxide, a
respirator consisting of an organic vapor
cartridge and a particle filter may be
appropriate. In cases where an air
purifying respirator is not available for all
of the substances of concern in a
mixture, a supplied air respirator may be
required.
In some cases, the respirator is
preceded by an “(F)” designation. These
contaminants have been identified as
potential eye irritants. Full facepieces,
hoods, helmets or loose fitting
facepieces, or half facepieces with
appropriate eye protection should be
considered.
Format Explanation
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