Moldex Bitrex Fit Test Kit Manual de usuario
Moldex Fit Test Kit User Instructions
Qualitative Fit Testing with Bitrex® Solutions
Content
1. Introduction
1.1 What is qualitative Fit Testing? | 03
1.2 What is Bitrex®? | 03
1.3 Why fit test? | 03
1.4 Equipment | 04
1.5 Additional equipment needed | 04
2. Prior to Fit Testing
2.1 Preparing the solutions | 05
2.2 Checking the nebulisers | 07
2.3 Instructing the test person | 07
2.4 Preparing the hood | 08
3. Sensitivity Test
3.1 Putting on the hood | 09
3.2 Performing Sensitivity Test | 10
3.3 After Sensitivity Test | 11
4. Fit Test
4.1 Putting on the mask | 12
4.2 Preparing the test solution atmosphere and perform Fit Test | 13
4.3 Test exercises | 14
5. Test results
5.1 Repeating the test | 15
5.2 Most common reasons for failed Fit Tests | 16
5.3 Fit Test record | 17
5.4 How often should you Fit Test? | 17
6. Maintenance
6.1 Unblocking nebulisers | 18
Content
1. Introduction
1.1 What is qualitative Fit Testing?
A simple but effective method for checking that a tight fitting facepiece seals adequately
to the wearer‘s face (FFP and half masks).
Pass/fail test that relies on the test person‘s response to a test agent.
If the test person can taste the test agent through the mask at any time, the test is failed.
1.2 What is Bitrex®?
An odourless substance which is used in Fit Testing for its strong bitter taste.
Developed for cleaning products to prevent children from drinking them.
Drinking water after the Fit Test will quickly remove the taste.
Further information: www.bitrex.com
1.3 Why Fit Test?
To select a mask model which matches the test persons facial features and seals
adequately to their face.
To check that the wearer can put the mask on correctly.
Required by legislation in some countries (UK).
1. Introduction
| 03
1.4 Equipment
The Moldex Fit Test Kit comes with equipment required to carry out multiple tests.
1x Test Hood
2x Nebulisers (for sensitivity and test solution)
6x 2.5 ml ampoules Bitrex® sensitivity solution*
6x 2.5 ml ampoules Bitrex® Fit Test solution*
4x Replacement nebuliser inserts
2x Nebuliser cleaning pins
1x User instructions CD
* Replacement ampoules available
1.5 Additional equipment needed:
Paper towels
Stopwatch
Plain drinking water
Protective gloves
1. Introduction
| 04
2. Prior to Fit Testing
2.1 Preparing the solutions
We suggest to wear gloves during this procedure.
1
Every solution box contains a protective
crushing sleeve. Slide the sleeve onto the
ampoule all the way up to the applicator tip.
2
Keep applicator tip pointed upward.
Pinch the sleeve at the top of the ampoule to break
the glass inside the tube.
3 Remove the cap on top of the nebuliser.
2. Prior to Fit Testing
| 05
2.2 Checking the nebulisers
1
Make sure both caps are removed from the
nebuliser.
2
Check if nebulisers are working by spraying
against a dark background. You should see a
fine mist.
3
If you cannot see the mist then the nebuliser may
be blocked from crystallised Bitrex® Solution.
See maintenance section for further instructions.
4
Continue to check the nebulisers throughout the
Fit Test.
2.3 Instructing the test person
The test person should not eat, drink [except plain water], smoke or chew gum
for at least 15 minutes before the test.
Explain the reasons for Fit Testing and the Fit Test procedures to the test person.
2. Prior to Fit Testing
Make sure caps are removed
You should see a fine mist
| 07
2.4 Preparing the hood
1
Unfold the hood. We recommend to put it over a
box, basket or the back of a chair.
2
Before the first use, remove protective paper from
window panel.
3
Fasten the top left and right
press studs together.
4
Turn the hood and unfold it again
from the inside.
2. Prior to Fit Testing
| 08
3. Sensitivity Test
This test is done to ensure that the test person can detect the taste of Bitrex®
at sufficiently low levels to make the Fit Test valid.
3.1 Putting on the hood
1
Instruct test person to put on the hood without
a respirator.
2
Position the hood forward so there is about 10 cm
gap between the test person‘s face and the hood
window.
3
The hood should sit on the shoulders.
4
The test person holds the pull strings to keep the
hood in place. No need to draw them.
3. Sensitivity Test
| 09
3.2 Performing Sensitivity Test
1
The test person breathes through the mouth, with
tongue slightly forwarded.
2
Ask the test person to indicate as soon as they taste
the Bitrex®.
3
Inject up to 10 full squeezes until the person being
tested indicates they can taste the Bitrex®.
4
If nothing is detected, repeat the procedure up to a
further 2 times.
5
If nothing is detected after 30 squeezes, the test person cannot be tested with this test
method. Please contact Moldex for information on alternative methods.
6
Note the number of squeezes required. This will determine the amount of Bitrex® Test
Solution used during the Fit Test.
3. Sensitivity Test
Squeeze
10x
Squeeze
10x
Squeeze
10x
Nothing
detected?
Nothing
detected?
Nothing
detected?
Test is not
applicable.
Detected?
Note 10
Detected?
Note 20
Detected?
Note 30
| 10
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