MSA 697444 Instructions
MSA 697444 Instructions

MSA 697444 Instructions

Bitrex qualitative fit test kit

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Bitrex Qualitative Fit Test Kit
instructions
YOUR MSA BITREX QUALITATIVE

FIT TEST KIT INCLUDES:

1. Test hood
2. Nebulizer #1 (sensitivity)
3. Nebulizer #2 (fit test)
4. Sensitivity Solution
5. Fit Test Solution
6. Two sets of replacement nebulizer inserts

PREPARATION

1. Connect snaps at the top of the hood,
so that the connections help to support
itself.
2. Remove an applicator tube of Sensitivity
Test solution from its storage box. With
the fill tip pointed upward, pinch along
the full length of the applicator tube using
your thumb and forefinger until glass
ampoule inside of the applicator tube is
thoroughly crushed.
WARNING
It is important to keep the applicator tip
pointed upward when pinching the tube.
This is to prevent the solution from squirt-
ing out during the pinching process.
3. Remove the stopper from the nebulizer
labeled "No. 1 - Sensitivity Test
Solution". Insert the tip of the applica-
tor tube into the opening of the nebuliz-
er. Squeeze along the applicator tube
to transfer the solution from the appli-
cator down into the nebulizer until the
applicator is completely drained of the
solution.
WARNING
Do not attempt to remove the tip of the
applicator. It contains a porous filter
which is designed to allow the solution
to pass through it while filtering out the
TAL 109 (L) Rev. 3
glass ampoule particles. It is also not
necessary to puncture a hole or cut the
tip of the applicator. The applicator tip
already has the proper hole size in it to
allow the solution to squirt into the neb-
ulizer. See diagram on back.
NOTE
It is recommended that the protective
stopper be replaced back on the nebulizer
until the test is ready to be performed.
4. Repeat steps 2 and 3 using an applica-
tor tube of Fit Test Solution and the
nebulizer labeled "No. 2 - Fit Test
Solution."
5. Once the applicator solutions have
been drained into the nebulizers, the
applicator tubes can be safely dis-
posed.

SENSITIVITY TEST

This test is conducted to assure that the
person being fit tested can detect the taste
of the Bitrex solution at very low levels.
The sensitivity test solution is a 100 to 1
dilution of the fit test solution.
The test subject should not eat, drink, or
chew gum for at least 15 minutes before
the test.
1. Explain the fit test procedures to the
subject.
2. Have the subject don the hood without
a respirator.
3. Position the hood forward so there is
about six inches between the subjects
face and the hood. This is especially
important for the fit test, it helps to
ensure even dispersion of the aerosol
and allows free movement of the sub-
jects head while wearing a respirator.
4. Instruct the subject to breath through
their mouth.
© MSA 2001
5. Using the sensitivity test solution nebu-
lizer #1, inject the aerosol into the hood
through the hole in the hood. Inject ten
squeezes of the bulb, fully collapsing
and allowing the bulb to expand fully
on each squeeze.
6. Ask the subject if they can detect the
taste of the Bitrex aerosol. If tasted
note the number of squeezes and pro-
ceed to the fit test.
7. If the subject does not taste the sensi-
tivity solution, inject an additional 10 full
squeezes of the aerosol into the hood.
Repeat with 10 more squeezes of the
aerosol into the hood if still not tasted.
8. If 30 squeezes of the nebulizer were
inadequate to produce a response from
the subject, the test should be ended
and another type of fit test must be used.
9. Remove the hood and give the subject
a few minutes to clear the taste from
their mouth.

FIT TEST

1. Have the test subject don and fit check
the respirator per the instructions pro-
vided with the respirator.
NOTE
The fit test is to be performed with the test
subject wearing a respirator with a particu-
late filter or prefilter.
2. Have the test subject don and position
the hood as before, and to breath
through their mouth.
3. Using the fit test nebulizer #2, inject the
fit test aerosol through the hole in the
hood using the same number of full
bulb squeezes as required in the sensi-
tivity test, ie. 10, 20, or 30 squeezes.
4. To maintain an adequate concentration
of aerosol during this test, inject one-
half of the number of squeezes used in
step #3 above, every 30 seconds.
Prnt. Spec. 10000005196 (C) Mat. 816975
Doc. 816975
part no.
697444

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Summary of Contents for MSA 697444

  • Page 1 Bitrex Qualitative Fit Test Kit 697444 instructions YOUR MSA BITREX QUALITATIVE glass ampoule particles. It is also not 5. Using the sensitivity test solution nebu- FIT TEST KIT INCLUDES: necessary to puncture a hole or cut the lizer #1, inject the aerosol into the hood tip of the applicator.
  • Page 2 OSHA they detect the taste of Bitrex aerosol at any time during the test. The MSA qualitative fit test kit meets the 6. After the initial aerosol is injected (step 3), performance criteria for fit testing respira- instruct the test subject to perform the tors under the current OSHA standards.

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