Fit Testing

Quantitative Fit Testing

Everitt Consulting and Safety Inc. is pleased to offer mobile quantitative (QNFT) fit testing services to the Prince Albert area as well as throughout Saskatchewan using a TSI PortaCount Pro+8038 Fit Test instrument.   

We are able to fit test all makes, models and sizes of respiratory protective equipment, from N95 filter masks to SCBA full face masks.  Whether you use respiratory protection in the fire service, as a health professional, industrial settings, commercial work or on the farm - ensure that the device you are using is able to provide the maximum protection possible.

Further to this, we will ensure that your employees are properly trained to wear close fitting respirators.  This demonstration of competence is an essential element of the fit test process. 



Fit Testing - Frequently Asked Questions


Q:        Why do we need to fit test?

A:        Fit testing is required for all personnel expected to utilize a tight-fitting respirator in the course of their training, duties or employment.  If personnel may be exposed to a hazardous contaminant or atmosphere identified as IDLH (Immediately Dangerous to Life and Health), respiratory protection must be worn.


Q:        What Standards or Legislation requires this testing to be done?

A:        Saskatchewan Occupational Health and Safety Regulations – Section 88 (1)

            NFPA 1500 – Section 7.12

            NFPA 1404 – Section 4.1

            CSA Z94.4-11 – Section 9

            OSHA 1910.134 (f)

            ANSI Z88.2 - 1992


Q:        Are there different ways to fit test personnel?

A:        Yes.  Fit testing can be accomplished by either a Qualitative (QLFT) or Quantitative (QNFT) method.


Q:        What is the difference between Qualitative (QLFT) and Quantitative (QNFT) methods?

A:        QLFT  test is a pass/fail test relying on the subject's voluntary or involuntary response to a challenge agent; i.e., taste, smell or irritation. If the subject detects the challenge agent at any time during the test, the subject fails the test. When the fit test is passed, the person is deemed to have a fit factor that is at least as high as the QLFT was designed to determine. That fit factor is 100 for all currently accepted QLFT protocols. This means that in most cases, QLFT is only used for half mask respirators, since a fit factor of 100 is considered adequate. Respirators that require a fit factor above 100 must be fit tested using QNFT.

QNFT measures the challenge agent leakage into the respirator without dependence on a test subject’s voluntary or involuntary response to the challenge agent. The instrumentation is typically capable of measuring fit factors of 10,000 and higher. Respirators that require a fit factor above 100 must be fit tested using QNFT.


Q:        What are the advantages and disadvantages of each method of testing?



Q:        What fit factors are required for different forms of respiratory protection?

A:        In accordance with CSA Z94.4-11, the following minimum fit factors must be obtained:

Respirator Type



Q:        How often does the fit testing need to be done?

A:        Your organization can determine the frequency of re-testing.  It is recommended to re-test when new respiratory protection devices are used, significant weight loss / gain has occurred, after initial training has occurred, when user experiences discomfort during normal use, or a change in PPE that could affect the respirator.  In addition to these recommendations:

·      CSA recommends every two years

·         NFPA recommends annual fit testing


Q:        What type of testing does Everitt Consulting and Safety Inc. offer?

A:        Everitt Consulting and Safety Inc. offers Quantitative (QNFT) fit testing utilizing a TSI PortaCount Pro+ 8038 Fit Testing instrument.


Sample Report:    

Contact us today to find out how easy, affordable and accessible this service is to your organization.

© ECSI 2013