Health and Safety

Health and Safety

ExecutiveExecutive

Guidance on respiratory
protective equipment (RPE)
fit testing
Introduction This is a web-friendly
version of leaflet
This guide gives advice on fit testing for the employer and those conducting fit tests.
INDG479 (rev1),
This guide provides: published 03/19

■ information on fit test methods;

■ information on what can be achieved from a fit test; and
■ the core information to be included in a fit test report.

Following this guidance is not compulsory and you are free to take other actions to comply with the requirements
of the law. But if you do follow the guidance you will normally be doing enough to comply with the law. Health and
safety inspectors seek to secure compliance with the law and may refer to this guidance as illustration of good
practice.

HSE does not approve nor recommend any particular fit testing equipment.
Any equipment included in this guidance provides representative information.

Further advice on the practical aspects of fit testing is provided by the British Safety Industry Federation (BSIF); this
can be found at www.fit2fit.org.

Fit testing should be conducted by a competent person. Competence can

be demonstrated by accreditation under the Fit2Fit RPE Fit Test Providers Accreditation Scheme. This scheme has
been developed by the BSIF, together with industry stakeholders, and is supported by HSE. The scheme is not
compulsory and employers are free to take other action to comply with the law. Further details on the scheme can
be found at www.fit2fit.org.

Where respiratory protective equipment (RPE) is used as a control measure under health and safety legislation, it is
vital that the selected RPE is both adequate
and suitable. General advice on selection of RPE is covered in the HSE guidance document Respiratory protective
equipment at work: A practical guide (HSG53).¹

To ensure that the selected RPE has the potential to provide adequate protection for individual wearers, the
Approved Codes of Practice (ACOPs) supporting the Control of Substances Hazardous to Health Regulations
(COSHH),² the Control of Lead at Work Regulations,³ the Control of Asbestos Regulations,4 the Confined Spaces
Regulations5 and the Ionising Radiations Regulations6 stipulate that tight-fitting RPE should be fit tested as part of
the selection process.

The performance of tight-fitting facepieces depends on achieving a good contact between the wearer’s skin and the
face seal of the facepiece. People’s faces vary significantly in shape and size so it is unlikely that one particular
model or size of RPE facepiece will fit everyone. Inadequate fit will significantly reduce the protection provided to the
wearer. Any reduction in protection may lead to immediate or long­ term ill health or can even put the RPE wearer’s
life in danger.
Fit testing is therefore a method for checking that a specific model and size of tight-fitting facepiece matches the wearer’s
facial features and seals adequately to the wearer’s face. It will also help to identify unsuitable facepieces which
should not be used.
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A pre-use wearer-seal check should be carried out each time a fit-tested facepiece is worn and before entering
the hazardous environment. This check is to determine whether the wearer has correctly donned a facepiece
before entering a contaminated work area. The RPE manufacturer will provide instructions on how to carry it out.
Note, however, that a pre-use wearer-seal check is not a substitute for fit testing.

Tight-fitting facepieces (often referred to as masks) rely on having a good seal

with the wearer’s face. These are available as both non-powered and powered respirators, and breathing
apparatus (BA) with either a half mask or a full-face mask. Their performance, irrespective of whether they are
non-powered (negative pressure), powered or constant-flow airline BA relies heavily on the quality of fit of the
facepiece to the wearer’s face. An inadequate fit will significantly reduce the protection provided to the wearer.

Examples of types of tight-fitting facepieces are shown in Figures 1, 2 and 3.

Figure 1 Figure 2 Figure 3

Disposable half mask Reusable half mask Full-face mask

Guidance for employers

This guidance assumes that you have chosen to use tight-fitting RPE as part of your control regime following an
appropriate risk assessment. It also assumes that you have considered the wider aspects of RPE provision found
on the HSE website at
http://www.hse.gov.uk/respiratory-protective-equipment/index.htm and in the guidance document Respiratory
protective equipment at work: A practical guide (HSG53).

It is important to know that some pre-existing medical conditions (for example, breathing disorders such as
asthma; skin allergies; or even heart problems) may restrict or prevent some workers wearing any RPE, or
certain types of RPE.
You will need to ensure that workers are fit to wear the selected and required RPE. If you are unsure, you (the
employer) should arrange for appropriate medical assessment.

Powered or constant-flow airline BA RPE with loose-fitting hoods or helmets do not require fit testing.

Tight-fitting powered or constant-flow airline BA RPE under positive pressure

still requires fit testing as studies have shown that during heavy exertion, inward leakage is possible.

A fit test should be carried out as part of the initial selection of the RPE.

A fit test should be repeated whenever there is a change to the RPE type, size, model or material or whenever
there is a change to the circumstances of the wearer that could alter the fit of the RPE; for example:

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■ weight loss or gain;

■ substantial dental work;
■ any facial changes (scars, moles, effects of ageing etc) around the face seal area;
■ facial piercings;
■ introduction or change in other head-worn personal protective equipment (PPE).

As part of your RPE programme, it is good practice to have a system in place to review when a repeat fit
test may be required. For example, face shape will change through ageing alone.

There are two basic types of RPE fit testing – qualitative and quantitative.

Qualitative fit testing (QLFT)

Qualitative fit testing (QLFT) is a pass/fail test based on the wearer’s subjective assessment of any leakage
through the face seal region by detecting the introduction of bitter- or sweet-tasting aerosol as a test agent.
QLFT methods are suitable for disposable and reusable half masks; they are not suitable for full-face masks.
Although this type of test is based on subjective detection and response by the wearer of the RPE, it is
important that it is administered by a fit tester competent in using this method.

Quantitative fit testing (QNFT)

Quantitative fit testing (QNFT) provides a numerical measure of how well a facepiece seals against a wearer’s
face; this is called a fit factor. These tests give an objective measure of face fit. QNFT methods are suitable for
disposable and reusable half masks and full-face masks. Examples of QNFT methods are:

■ ambient particle counting;

■ controlled negative pressure (CNP).

The fit factor, which is calculated by the fit test equipment, uses the following formulas:
For the ambient particle counting method, the quantitative fit factor (QNFF) is calculated as the ratio of the
two aerosol concentrations measurements as shown in formula (1):
(1)
QNFF = Co
Where Ci
Co is the challenge aerosol concentration outside the facepiece;

Ci is the challenge aerosol concentration inside the facepiece.

For the CNP method, the QNFF is calculated as the ratio of the inspiratory flow rate and the mean
leakage flow rate as shown in formula (2): Where
QNFF = IFR (2)
LFR

IFR is the inspiratory flow rate associated with CNP challenge pressure;

LFR is the mean leakage flow rate measured with the head held in a motionless
position at the end of each test exercise.

For half masks, the CNP challenge pressure should be 15 mm (0.58 inches) H2O and the inspiratory flow
rate should be 53.8 litres/min. For full-face masks, the CNP challenge pressure should be 25 mm (1 inch)
H2O and the inspiratory flow rate should be 55.8 litres/min.

The type of fit test method used depends on the type of RPE to be fit tested. Table 1 shows which fit test
methods are applicable.

Table 1 Fit test method selection

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Fit testing method

RPE (type and mask) Quantitative (QNFT) Qualitative (QLFT)
Ambient Controlled Taste
particle negative
counting pressurea
Disposable Half mask Yes No Yes
respiratorb
Reusable Half mask Yes Yes Yes
respirator Full-face mask Yes Yes No
Powered Half mask Yes Yes Yes
respirator Full-face mask Yes Yes No
Constant flow Half mask Yes Yes Yes
airline BA Full-face mask Yes Yes No
Fresh air Half mask Yes Yes Yes
hose BA Full-face mask Yes Yes No
Demand Half mask Yes Yes Yes
valve BA Full-face mask Yes Yes No
Escape BA Full-face mask Yes Yes No
a
Any leakage through the exhalation valve has to be eliminated.
b
The ambient particle counting instrument may require additional functionality, such as the TSI N95 technology, to eliminate penetration of ambient
particles through the filter material for masks with assigned protection factors (APFs)* of 4 (FFP1) and 10 (FFP2).
* APF is the workplace level of respiratory protection the facepiece is expected to provide, and is used when selecting adequate RPE.

If it is not possible for the wearer to obtain an adequate fit with the first choice of facepiece you
should attempt fit testing using an alternative make, model or size of tight-fitting facepiece. Where
you cannot achieve an adequate fit you should select another type of RPE that does not rely on a
tight-fitting face seal, such as a loose-fitting respirator hood or helmet.

You should record the fit test by means of a report or certificate which should clearly state whether
the result of the fit test was a pass or fail. Annex 1 shows the content that you should provide in a fit
test report.

The fit test report should be available to the employee and accessible to others such as enforcement
authorities. Collective reports should be available to safety representatives. You should record RPE
examinations and tests – and, where appropriate, any repairs made – and retain them for at least five
years.

The employer is responsible for meeting the cost of fit testing.

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Guidance for fit testers

General
As a fit tester you have duties under health and safety at work legislation because if you do not carry
out a fit test properly the wearer could be exposed to substances hazardous to health due to
facepiece leakage.

RPE fit testing should be carried out by a competent person. A fit tester should have adequate
knowledge, and have received adequate instruction and training in the following areas:

■ selection of adequate and suitable RPE;

■ examination of RPE and the ability to identify poorly maintained facepieces;
■ ability to correctly fit a facepiece and perform pre-use wearer-seal checks;
■ ability to recognise a poorly fitting facepiece;
■ awareness of external factors that may affect the fit of the facepiece or the fittest result;
■ the purpose and applicability of fit testing;
■ the differences between, and the appropriate use of, QNFT and QLFT methods;
■ the purpose of the fit test exercises;
■ preparation of facepieces for fit testing;
■ how to carry out diagnostic checks on the facepiece and the fit test equipment;
■ capabilities and limitations of the fit test equipment;
■ how to perform a correct fit test with the chosen method;
■ awareness and knowledge of how to prevent and correct problems duringfit testing;
■ interpretation of fit test results;
■ an understanding of the differences between fit factor, workplace protectionfactor (WPF),†
assigned protection factor and nominal protection factor (NPF)‡; and
■ HSE ACOPs and guidance that deal with fit testing of RPE.
†
WPF is the protection provided by the RPE when used and measured in the workplace and is the ratio between the
breathing zone concentration of the contaminant inside and outside of the facepiece.
‡
NPF is the level of respiratory protection the facepiece is expected to provide under laboratory conditions and is the
pass/fail for the particular European standard.

Facepieces used for fit testing can be one of the following:

■ the wearer’s individually assigned facepiece;

■ a test facepiece of the same type, class and size; or
■ a surrogate facepiece with the same sealing surfaces, materials, head strapsand breathing
resistance as the facepiece assigned to the wearer. You shouldconfirm this with the RPE
manufacturer/supplier.

Where facepieces are issued on an individual basis it is recommended that the wearer is fit tested using
their issued facepiece.
Where this is not practicable use a test facepiece that exactly matches the wearer’s facepiece.
Fit test half and full-face masks as negative-pressure facepiece respirators by attaching a P3 filter, or a
combined filter that incorporates a P3 filter, directly to the facepiece. Where practicable, the filter (or
facepiece adapter) should be identical to, or similar to, the type of filter normally used with the respirator,
ie of similar breathing resistance and weight. You will need to temporarily convert facepieces used with
compressed-air-supplied BA and power-assisted respirators to negative-pressure respirators.
Alternatively you may use an identical negative-pressure respirator facepiece with the same sealing
surface (ie same mould of face blank and material) if available.
Facepieces are available in several different sizes and shapes. The wearer may obtain a better fit (ie
pass a fit test) by trying a respirator of a different size, model or make.
The practice of multiple repeat fit tests with the aim of achieving a pass with a given facepiece, ie force
fitting, should not be carried out. If after two fit tests the result is still a fail, an alternative facepiece
should be tried.

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Visually examine the facepiece to be used for fit testing before carrying out a fit test. The examination
should include the condition of the facepiece, especially around the face seal and facepiece connectors,
the exhalation valve(s) and the head harness. You should properly inspect test facepieces and maintain
them in accordance with the manufacturer’s instructions.
The fit tester should ensure that test facepieces are cleaned and disinfected before being used by different
individuals. Test facepieces that cannot be adequately disinfected (eg disposable half masks) should not
be used by more than one individual.
The fit tester should ensure that the fit testing equipment is in good working order, properly set up and
checked or tested before conducting the fit test. Maintain and calibrate the fit test equipment in
accordance with the manufacturer’s instructions.
Variation from the procedures and fit test equipment specified in this guidance may invalidate the fit test
results unless the procedures and equipment used have previously been validated. The criteria for
evaluating fit test methods given in BS ISO 16975-3 Annex C7 are recommended.

The following standards are recommended as suitable references:

■ BS ISO 16975-3:2017, Respiratory protective devices – Selection, use andmaintenance. Part 3: Fit-
testing procedures
■ European Standards covering inward leakage testing: BS EN 136,8 BS EN 1409 and BS EN 149.10

Preparing the wearer

The fit tester should explain to the wearer the purpose of the fit test, what they will have to do, and the meaning
of the fit test results.
When you are conducting a qualitative fit test, you should advise wearers not to eat, drink (except still,
unflavoured water), smoke or chew gum for at least 30 minutes before the test. When you are conducting an
ambient particle counting fit test the wearer should refrain from smoking (including e-cigarettes) for at least 60
minutes before the fit test.
Do not conduct fit tests if there is any hair growth between the wearer’s skin and the facepiece sealing surface,
such as stubble beard growth, beard, moustache, sideburns or low hairline, which cross the respirator sealing
surface. You should ensure that any type of non-PPE apparel or adornment (eg piercing) does not interfere with
the fit of the facepiece.
Inform wearers that they should be clean-shaven in the region of the face seal whenever they wear a tight-fitting
facepiece at work.
The fit tester should instruct the wearer in the test exercises appropriate to
the fit test method used as shown in Annex 2.
The fit tester should ascertain that the wearer is medically fit to wear RPE and seek confirmation (preferably in
writing) from the employer.
The wearer should have received training in correct donning of the facepiece before the fit test. If you are also
providing RPE training, you should show the wearer how to put on a facepiece, position it on the face, set the
strap tension and determine an acceptable fit. A mirror should be available to assist the wearer in evaluating the
fit and positioning of the facepiece.
The wearer should be able to don the facepiece in accordance with the manufacturer’s instructions, in the
manner in which they have been trained, and without assistance from the fit tester.
If the wearer needs to use in-facepiece spectacles they should wear them during the fit test.
Wearers should wear any other PPE that could potentially interfere with the fit of the facepiece during the fit test.
If they cannot wear the PPE properly without affecting the function of the RPE or vice versa, choose alternative
PPE.
Preparing for a quantitative fit test – all methods
Use, maintain and calibrate QNFT equipment in accordance with the manufacturer’s recommendations. Before
using the equipment, check its stability as instructed by the manufacturer. Retain all records of maintenance,
calibration and pre-use checks.

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The minimum fit factor in a quantitative face-fit test, that should be achieved to pass a fit test, will depend on
the type and class of facepiece being tested. Table 2 shows the HSE-required minimum fit factors that should
be achieved in each of the fit test exercises used with a particular type of fit testing device.

Table 2 Required minimum fit factors for quantitative fit testing

Facepiece type Quantitative fit test methods

Ambient particle Controlled negative
counting pressure
Disposable half mask APF 4 100 n/a
(FFP1)a
Disposable half mask 100 n/a
APF 10 (FFP2)a
Disposable half mask 100 n/a
APF 20 (FFP3)
Half face mask 100 100
Full-face mask 2,000 2,000

a When using a PortaCount, APF 4 (FFP1) and APF 10 (FFP2) disposable half masks can only be fit tested if N95 technology is employed.

Preparing for a quantitative fit test using the ambient particle counting method
The fit test exercises for the ambient particle counting method are given in Table 3.

Fit the facepiece with a sample probe positioned so that the air sample withdrawn from the facepiece is
representative of the air breathed by the wearer. Position the open end of the sampling tube in the wearer’s
breathing zone, close to the face and approximately mid-way between the nose and mouth. Do not isolate the
sample probe from the nose and mouth region by a physical partition; for example, by the inner mask of a full-
face mask. For half masks and full-face masks, use a suitable fit test adapter and position the open end of the
sampling tube as described above.

When fitting the sample probes to half and full-face masks, use suitable sampling adapters to avoid puncturing
the facepiece. RPE manufacturers and fit test equipment suppliers can provide suitable fit test adapters to fit
most facepiece types. These adapters should enable fit testing on wearer-issued facepieces. When fitting the
sampling adapter to the facepiece, take care not to block off or restrict the flow of air through the sampling
tube.

The positioning and the combined weight of the fit test adapter, sample probe and sample tubes should not
interfere with the fit of the facepiece. This is particularly important when fit testing disposable or lightweight half
masks. Sample probes should be lightweight and the sample tubes must be supported to avoid any drag on
the fit of the facepiece.

The wearer’s exhaled breath can contain particles that can be detected by the particle counting device. These
wearer-generated particles can result in a falsely low fit test result. Having an ambient challenge concentration
of at least 3000 particles/ cc for fit testing disposable and reusable half masks, and 10,000 particles/cc for fit
testing full-face masks, will reduce the likelihood of false fails.

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An ambient particle count that varies significantly over the duration of the test
can also give rise to errors in the fit factor. Avoid excessively dusty and smoky environments. Seek further
advice from the fit test equipment supplier if necessary.
Very high fit factors, ie figures over 100,000, could indicate a problem with the application of the fit test; if this
happens check the validity of the result.
Preparing for a quantitative fit test using the controlled negative pressure method
The fit test exercises for the CNP method are given in Annex 2, Table 4.
During the CNP measurement the wearer should keep their mouth closed. They should be given time to practise the
breath-hold procedure.
The CNP method requires the use of the appropriate fit test adapters for the type of filter connection present on the
facepiece to be fit tested.
Preparing for a qualitative fit test based on taste
The fit test exercises for the qualitative method are given in Annex 2, Table 3.
To achieve a pass in a qualitative fit test the wearer must not taste the test agent at any time during any of the
test exercises.
The test solution concentrations and the fit test equipment including hood size are specified in BS ISO
16975-3.
Maintain and use all QLFT equipment in accordance with the manufacturer’s recommendations.
Before carrying out a qualitative fit test using a distinctive taste, establish the taste threshold of the wearer. This
screening test is carried out to check that the wearer can detect the taste of the test aerosol. This is often
referred to as a sensitivity test. If the wearer cannot detect the taste during the screening test, the fit test
method cannot be used and you should choose a different method.
Conduct the fit test as a continuous test, allowing sufficient time between the sensitivity test and the fit test for the
wearer to clear their palate. Should a fit tester not wish to continue directly from the sensitivity test to the fit test
for practical reasons, they should complete the fit test on the same day. The wearer should refrain from smoking,
eating or drinking (except for water) during the intervening period.
The nebulisers used to generate the aerosol for the screening test may clog during use and stop delivering the
test substance. Therefore the fit tester should make periodic checks of the nebulisers during the test to ensure
that it is not clogged. If clogging is found at the end of the test session, the test is invalid. Regular cleaning of the
nebulisers should help to prevent clogging.
Conducting the fit test – all methods
Observe the wearer throughout the fit test to ensure that the correct test exercises are conducted. Also watch
for facial and head movements that may cause face seal leakage. If the wearer sneezes or coughs during the
fit test this can affect the fit test result and you may have to repeat the fit test.

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You should also ensure the safety of the wearer – this is especially important if the
wearer is walking on a treadmill or stepping during the fit test.

Inform the wearer of the fit test result; ie a pass or fail. Take care when providing
information on the numerical fit factor results; informing a wearer that a high fit
factor has been achieved may give them false confidence in the RPE and it may
cause them to be less careful when donning and using the RPE in the workplace.
Stress to the users that practical experience in the workplace has shown that the
protection obtained is often less than that achieved in the fit test.

If a poor fit is likely to be caused by inadequate training, the wearer’s employer

should be informed.

Annex 1

Fit test report

A record of the fit test shall be produced. The fit test report should clearly identify
the following (where applicable):

a) the name of person fit tested;

b) the make, model, material and size of the facepiece;
c) the type of filters fitted to the facepiece during the fit test;
d) the presence or absence of in-facepiece spectacles;
e) the make and model of any PPE and/or RPE accessory worn during the fit
test;
f) whether the facepiece used was the subject’s issued facepiece, a company
pool facepiece or a test facepiece;
g) the test exercises performed during the fit test;
h) the fit test method employed; ie ambient particle counting device, CNP or
qualitative taste test agents;
i) for quantitative tests, the measured fit factor for each individual test exercise
and the overall fit factor;
j) the pass level used in the test;
k) the result of the fit test in terms of a pass or fail;
l) the date of the test; and
m) the details of the person who performed the test, name of firm, address etc.

The fit test report should also record, where appropriate:

n) the condition of the wearer’s own facepiece;

o) whether the wearer required assistance donning and carrying out a wearer seal
check before the fit test;
p) how many repeat tests were needed to obtain a pass and the reasons why;
and
q) the serial number or other means of identifying the equipment employed in the
fit test.

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Annex 2

Fit test exercises

For QLFT and quantitative ambient particle counting methods, the fit test protocol
should include a minimum of seven exercises; each test exercise should be
performed for at least one minute. During the quantitative fit tests, the exercises
should allow for an in-facepiece sample period of at least 60 seconds.

Table 3 Fit test exercises for qualitative methods and quantitative ambient particle
counting methods

Exercise Description
(i) Normal The wearer should breathe normally with no head movements
breathing or talking.
(ii) Deep The wearer should breathe slowly and deeply, taking care not
breathing to hyperventilate.
(iii) Turning The wearer should slowly turn their head from side to side
head side between the extreme positions on each side (approximately
to side 15–20 times per minute). The head shall be held at each
extreme momentarily so the wearer can inhale at each side.
(iv) Moving The wearer should slowly move their head up and down
head up (approximately 15–20 times per minute). The wearer should be
and down instructed to inhale in the up position (ie when looking toward
the ceiling).
(v) Talking The wearer should talk slowly and loudly enough to be
heard clearly by the fit tester. The wearer should read from a
standard reading passage or count down from 100.
(vi) Bending From a normal standing position, the wearer should bend at
over the waist as if to touch their toes and then return to an upright
position. Repeat approximately 10–15 times throughout the
duration of the exercise.
(vii) Normal Same as exercise (i).
breathing

During QLFT the fit test exercises should be performed with the wearer standing.

During QNFT the fit test exercises (except for the bending exercise) should be
performed while the wearer is doing one of the following:

1. cycling on an exercise bike;

2. walking on a treadmill; or
3. carrying out a stepping exercise.

Note: Take care when asking people to exercise and be aware of the risks of slips
and trips.

When you are conducting a fit test using the CNP method you cannot measure the
fit during the exercises. Therefore you should measure the static fit factors at the
end of each exercise. Follow the procedure shown in Table 4.

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Table 4 Fit test exercises applicable for the controlled negative pressure method

Exercise Description
(i) Normal breathing In a normal standing position, without talking, the
wearer should breathe normally for one minute. After
the normal breathing exercise, the wearer should face
forward and hold their breath for approximately 10
seconds during the test measurement.
(ii) Deep breathing In a normal standing position, the wearer should
breathe deeply for one minute. After the deep breathing
exercise, the wearer should hold their head straight
ahead and hold their breath for approximately 10
seconds during the test measurement.
(iii) Turning head side In a normal standing position, the wearer should slowly
to side turn their head from side to side between the extreme
positions on each side for one minute. After the turning
head side to side exercise, the wearer should face
to the left and hold their breath for approximately 10
seconds during the test measurement. Next, the wearer
should hold their head fully right and hold their breath
for 10 seconds during the test measurement.
(iv) Moving head up In a normal standing position, the wearer should
and down slowly move their head up and down (approximately
15–20 times) for one minute. After the moving head
up and down exercise, the wearer should hold their
head fully up and hold their breath for approximately
10 seconds during the test measurement. Next, the
wearer should hold their head fully down and hold their
breath for approximately 10 seconds during the test
measurement.
(v) Talking The wearer should talk slowly and loudly enough
to be heard clearly by the fit tester. The wearer
should read from a standard reading passage or
count down from 100. After the talking exercise, the
wearer should hold their head straight and hold their
breath for approximately 10 seconds during the test
measurement.
(vi) Bending over From a normal standing position, the wearer should
bend at the waist as if to touch their toes and then
return to an upright position. Repeat approximately
10–15 times throughout the duration of the exercise.
After the bending exercise, the wearer should hold their
head straight and hold their breath for approximately 10
seconds during the test measurement.
(vii) Normal breathing Same as exercise (i).

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REFERENCES
1. The selection, use and maintenance of respiratory protective equipment – A
practical guide HSG53 HSE 2013 www.hse.gov.uk/pUbns/priced/hsg53.pdf

2. The Control of Substances Hazardous to Health Regulations 2002 (as

amended). Approved Code of Practice and guidance L5 (Sixth edition) HSE
2013 www.hse.gov.uk/pubns/priced/l5.pdf

3. The Control of Lead at Work Regulations 2002 – Approved Code of Practice

and guidance L132 (Third edition) HSE 2002 www.hse.gov.uk/pubns/priced/
l132.pdf

4. Managing and working with asbestos. Control of Asbestos Regulations 2012.

Approved Code of Practice and guidance L143 (Second edition) HSE 2013
www.hse.gov.uk/pubns/books/l143.htm

5. Safe work in confined spaces. Confined Spaces Regulations 1997 Approved

Code of Practice, Regulations and guidance L101 (Third edition) HSE 2014
www.hse.gov.uk/pubns/books/l101.htm

6. Work with ionising radiation. Ionising Radiations Regulations 2017. Approved

Code of Practice and guidance L121 (Second edition) HSE 2018 www.hse.
gov.uk/pubns/books/l121.htm

7. BS ISO 16975-3:2017 Respiratory protective devices – Selection, use and

maintenance. Part 3: Fit-testing procedures British Standards Institution

8. BS EN 136:1998 Respiratory protective devices: Full face facepiece –

Requirements, testing, markings British Standards Institution

9. BS EN 140:1998 Respiratory protective devices: Half facepieces and quarter

facepieces – Requirements, testing, markings. British Standards Institution

10. BS EN 149:2001 + A1:2009 Respiratory protective devices – Filtering half

masks to protect against particles – Requirements, testing, marking. British
Standards Institution

Further information
For information about health and safety visit https://books.hse.gov.uk or
http://www.hse.gov.uk.

You can view HSE guidance online and order priced publications from the website.
HSE priced publications are also available from bookshops.

To report inconsistencies or inaccuracies in this guidance email:

commissioning@wlt.com.

British Standards can be obtained in PDF or hard copy formats from BSI:
http://shop.bsigroup.com or by contacting BSI Customer Services for hard copies
only Tel: 0846 086 9001 email: cservices@bsigroup.com.

The Stationery Office publications are available from The Stationery Office,
PO Box 29, Norwich NR3 1GN Tel: 0333 202 5070 Fax: 0333 202 5080.

E-mail: customer.services@tso.co.uk Website: www.tso.co.uk. They are also

available from bookshops.

Guidance on respiratory protective equipment fit testing 13

 Health and Safety
Executive

Statutory Instruments can be viewed free of charge at www.legislation.gov.uk

where you can also search for changes to legislation.

This leaflet is available in priced packs from HSE Books,

ISBN 978 0 7176 6706 2.

© Crown copyright Any enquiries regarding this publication should be sent to:
copyright@hse.gov.uk

First Published 03/19

Published with the permission of the Health and Safety Executive on behalf of
the Controller of Her Majesty’s Stationery Office.

Guidance on respiratory protective equipment fit testing 14