Respirator Fit Test - MSA Advantage 400 Serie Manual De Instrucciones

provide adequate protection for additional escapes. Additionally, once the cartridges are
initially placed into service or carried by the user in anticipation of escape, they must be
replaced based on an appropriate cartridge change-out schedule. Extended exposure of
the cartridges to nuisance levels (below the PEL) of the contaminant may prevent the
cartridges from providing adequate escape protection.
6. For respirators with combination cartridges (chemical cartridges with filters): The limitations
specified above for chemical cartridges as well as the applicable filter class apply for
combination cartridges.
7. Applicable respirator use requirements as specified in the OSHA Respiratory Protection
Regulation 29 CFR Part 1910.134 (or other requirements established by the Regulatory
Agency with jurisdiction over the wearer). Additional OSHA Regulations may also apply for
certain contaminants (See MSA's Response Respirator Selector).
EXPOSURE LIMITS
A listing of acceptable exposure limits from the following sources is provided in MSA's
Response ® Respirator Selector:
— American Conference of Governmental Industrial Hygienists (ACGIH)
— Occupational Safety and Health Administration (OSHA)
— National Institute for Occupational Safety and Health (NIOSH)
— American Industrial Hygiene Association (AIHA)
EXPOSURE LIMITS FOR MIXTURES
The American Conference of Governmental Industrial Hygienists (ACGIH) publishes the
following information to determine the Threshold Limit Value (TLV) of a mixture.
First determine the total concentration of the chemical mixture (C Mixture ) from the individual
contaminant concentrations (C 1 , C 2 , C 3 ...) using the following formula:
The TLV of the mixture is found by using the following formula where T 1 , T 2 , T 3 , ... are the
individual contaminant TLVs and
C 1 , C 2 , C 3 ... are the individual
contaminant concentrations:
Only use these equations if the contaminants present are actually mixed. Some substances do
not mix and may be present separately, for example, in pockets or at different levels. In that
case, the lowest TLV of the substances present must be used to determine the appropriate
respirator category for protection against all contaminants present. See MSA's Response
Respirator Selector for additional information.

RESPIRATOR FIT TEST

The user must pass a qualitative or quantitative respirator fit test before using this respirator.
Respirator fit tests are explained fully in the American National Standard for Respiratory
Protection, ANSI Z88.2, which is published by the American National Standards Institute, 11 West
42nd Street, New York, New York, 10036.
MSA 904 (L) Rev. 1 - 10096834
DESCRIPTION
C Mixture = C 1 +C 2 +C 3 +
C Mixture
T Mixture =
C C C
1 2
+ +
T 1 T 2 T 3
3
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