Respirator Fit Testing FAQ & Contact | MaskFit+

Frequently Asked Questions

Find clear answers about respirator fit testing, public sessions and onsite workplace testing throughout Southern Ontario.

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Fit-Testing Basics

A respirator fit test determines whether a specific respirator make, model and size forms an effective seal against the wearer’s face.

Fit testing is completed while the participant performs a series of exercises that may include normal breathing, deep breathing, moving the head, speaking and bending. The result applies only to the respirator used during the test.

When a tight-fitting respirator is required for work, it must be tested using an appropriate qualitative or quantitative fit-testing method.

MaskFit+ provides OHSA-aligned fit testing based on applicable Ontario occupational health and safety requirements and CSA Z94.4 fit-testing methods.

Ontario’s Occupational Health and Safety Act, commonly called the OHSA, is legislation. It does not approve individual fit-testing providers.

MaskFit+ provides OHSA-aligned respirator fit testing based on applicable Ontario requirements and CSA Z94.4 fit-testing methods.

Fit testing may be required for workers, professionals and students who must wear a tight-fitting respirator for work, school or a clinical placement.

MaskFit+ serves individuals and organizations across industries including:

  • Healthcare and long-term care
  • Hospitals and dental offices
  • Medical research
  • Construction
  • Manufacturing
  • Plant operations
  • Maintenance
  • Painting and welding
  • Engineering
  • Education and industrial programs
  • Other workplaces where respiratory protection is required

Respirators that depend on a tight seal against the face must be fit tested.

MaskFit+ provides fit testing for:

  • N95 respirators
  • R95 respirators
  • P95 respirators
  • Reusable half-face respirators
  • Full-face respirators

Qualitative fit testing is a pass-or-fail method that uses a test agent the participant can taste.

The test confirms whether the agent enters the respirator while the participant completes the required fit-test exercises. MaskFit+ provides qualitative fit testing using a taste-based test agent.

Quantitative fit testing uses specialized equipment to measure leakage and produce a numerical fit result. Unlike qualitative testing, it does not depend on the participant’s ability to taste or smell a test agent.

MaskFit+ does not provide quantitative fit testing.

Yes. MaskFit+ provides qualitative fit testing for full-face respirators.

Participants must bring the exact full-face respirator make, model and size they require unless another arrangement has been confirmed.

Fit testing should generally be repeated every two years.

Earlier retesting may be required when:

  • You change respirator make, model or size
  • Your facial shape changes
  • Significant weight changes could affect the seal
  • Dental work or facial surgery affects your facial structure
  • Other personal protective equipment affects the respirator
  • The respirator causes significant discomfort

Your fit-test result applies to the specific respirator make, model and size used during your test.

You must be tested again before changing to a respirator that may fit differently.

A user seal check is a quick check used to confirm that a respirator is properly positioned and sealed against the face.

A seal check should be completed each time the respirator is worn. It does not replace a qualitative or quantitative fit test.

Ontario requires a worker to be physically able to perform the required work while using a respirator. CCOHS also advises confirming that the wearer can safely use the respirator before fit testing and respirator use.

Participants who have anxiety, asthma, a heart condition or another respiratory concern should consult a physician when concerned and inform the MaskFit+ instructor before testing.

MaskFit+ does not provide medical evaluations or respirator-user screening.

Corporate and Onsite Testing

Yes. MaskFit+ provides onsite group fit testing at client offices, plants and other workplace locations throughout Southern Ontario.

Corporate onsite coverage includes:

  • Ancaster
  • Brampton
  • Brantford
  • Burlington
  • Cambridge
  • Guelph
  • Hamilton
  • Kitchener–Waterloo
  • London
  • Milton
  • Mississauga
  • Niagara Falls
  • Oakville
  • Oshawa
  • Richmond Hill
  • St. Catharines
  • Stoney Creek
  • Toronto and the Greater Toronto Area
  • Vaughan
  • Waterdown

Other Southern Ontario locations may be available by quote.

Yes. Organizations can arrange onsite testing for employees who require an initial fit test or two-year recertification.

MaskFit+ prioritizes corporate clients and sends email reminders when employees are approaching their two-year recertification dates.

No. There is no minimum number of participants for onsite testing.

A minimum onsite fee applies based on travel distance and includes the first six participants.

Each one-hour group session can include up to eight (8) employees.

One instructor can conduct up to seven sessions and test as many as 56 employees in one day.

Additional instructors may run parallel sessions for larger teams.

The current minimum depends on travel distance, and includes the first six participants. Additional participants are $50 each.

Longer trips may include an additional travel fee. Discounts may be available based on confirmed participant numbers.

Yes. Corporate onsite sessions can be scheduled flexibly to support morning, afternoon and evening shifts.

Contact MaskFit+ to discuss your preferred dates and timing.

Each participant receives a MaskFit+ certification card valid for two years after successfully completing the fit test.

The employer also receives a Mask Fit Certification Form signed by the participant and MaskFit+ instructor for its HR files.

Yes. MaskFit+ can coordinate onsite testing for organizations with multiple workplace locations.

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Transfers, Cancellations and Refunds

Requests must be emailed to info@maskfitplus.ca at least three business days before the scheduled session.

Weekends and government holidays do not count as business days. Requests received after 5:00 p.m. are treated as received on the next business day.

Yes. A $15 administration fee applies when transferring to another session.

After transferring, the registration is no longer eligible for another transfer or refund.

No. Refunds and transfers are not available with less than three business days’ notice.

Participants who do not attend their registered session are not eligible for a refund.

If MaskFit+ cancels a session because of low enrolment, instructor illness or an emergency, you may transfer to another available date at no charge or receive a full refund.

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Your Privacy

We take customer privacy seriously. MaskFit+ does not sell customer information. Personal information is handled in accordance with our privacy practices and applicable requirements.

Learn More About Respirator Fit Testing

Visit Learn More for updated articles about respirator fit testing, preparation, workplace respiratory protection and choosing the correct testing service.

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Contact MaskFit+

Email: info@maskfitplus.ca

Phone: 289-643-6222

Phone hours:

Monday to Friday: 9:00 a.m. to 5:00 p.m.

Weekends and government holidays: Closed

Public fit-testing sessions may be scheduled during evenings and weekends.

Corporate onsite sessions can be arranged flexibly to support morning, afternoon and evening shifts.

Primary Mississauga Appointment Venue:

10 Kingsbridge Garden Circle, Suite 706
Mississauga, Ontario
L5R 3K7

Advance registration is required. MaskFit+ also holds public sessions at scheduled venues in other Southern Ontario communities.

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