top of page

Mask Fit Testing – CSA-Compliant N95 Testing

Get certified in just 15 minutes!
Forest City First Aid offers qualitative mask fit testing using both sweet and bitter solution methods to ensure accurate results for all clients. Located at 1490 Richmond Street in London, Ontario, we’re just minutes from Western University and University Hospital.

Our testing follows CSA Z94.4 standards and is valid for 2 years. It’s ideal for:

  • Nursing, Dental Hygiene, PSW, and other health sciences students

  • Healthcare professionals

  • Construction and industrial workers

  • Anyone starting a placement or new job that requires N95 respirator certification

checkbox-icon-341264-512.png

What's Included?

  • Certified qualitative mask fit testing using sweet or bitter solution (we determine the best method during sensitivity screening)

  • Access to the most commonly required mask models:

    • 3M 1860 (regular) & 1860S (small)

    • 3M 1870+

    • 3M 8210

    • 3M 8110S

  • Option to bring your own mask or purchase one from us for $10

  • Physical certificate upon completion

7807810-200.png

Pricing?

  • $40 per person

  • ​Group discounts available — we can come to your location for groups of 6 or more

  • Option to bring your own mask or purchase one from us for $10

choosing-icon-7493473-512.png

Why Choose Us?

  • Both sweet and bitter solution methods offered for maximum accuracy

  • Close to Western campus & University Hospital

  • Flexible weekly scheduling

  • Professional, friendly, and CSA-compliant service

What You Need to Know Before Your Appointment
Why Mask Fit Testing Matters

 

Under Ontario’s Occupational Health and Safety Act and CSA Standard Z94.4, workers who use respirators (like N95s) must be fit tested every 2 years, or sooner if:

The model, size, or style of respirator changes

You have significant changes to your face (weight change, dental work, surgery, facial hair, etc.)

Fit testing ensures your mask provides the proper seal and protection.

​

Before You Arrive

Please make sure you are prepared for your fit test:

✅ No eating, drinking, smoking, vaping, or chewing gum for at least 15 minutes before your test (these can affect your sense of taste).

✅ Be clean-shaven where the mask seals – facial hair (beards, stubble, moustaches along the seal line) will cause the mask to fail.

✅ Bring Government photo ID.

✅ Know your employer’s required mask model(s) if applicable (ex: 3M 1870+, 3M 1860S).

✅ Wear comfortable clothing that does not interfere with the mask or hood.

​

Important Notes

You must be clean-shaven for the test and whenever wearing a tight-fitting respirator at work.

Fit testing must be redone if your mask type changes or if there are major changes to your face shape.

Certificates are required by employers in healthcare, dental, construction, industrial, and other regulated workplaces in Ontario.

Bring With You

Government or photo ID

Any respirators you were told to bring (if applicable)

Payment (if required, unless arranged through your employer)

✅ Following these steps will make your test faster, easier, and successful.

bottom of page