Mask Fit Testing in Markham
CSA & WSIB-Compliant N95 Fit Test
Calendar
Monday – Friday: 8:30 AM – 3.00 PM
Weekends: Closed
Appointments: Call (416) 635-7800 to schedule
Note: Only one person can book per appointment. For group bookings, please call us at (416) 635-7800.
Time Needed
Qualitative Mask Fit Test (N95, Half-Face): ~15 minutes
Quantitative Fit Test (Half-Face, Full-Face): ~30 minutes
Prices
Qualitative Mask Fit Test
N95 : $45 + taxes
Half-Face Mask: $70 + taxes
Quantitative Fit Test
- N95 : $50 + taxes
- Half-Face or Full-Face Respirators: $80 + taxes
*Mask & Filter Not Included
As of 2025, workplaces in Ontario require CSA-compliant respirator fit testing to protect employees. STS Group offers professional N95, half-face, and full-face mask fit testing in Markham and across Ontario. Our certified qualitative and quantitative fit testing ensures compliance with WSIB and Ministry of Labour regulations, helping workers in healthcare, construction, and industrial settings stay safe and certified.
Types of Respirator Mask Fit Testing:
N95 Respirator | Half Facepiece Elastomer | Full-Facepiece Elastomer | Self-Contained Breathing Apparatus (SCBA)
N95 Respirator
3M ½ Facepiece Elastomer
3M Full-Facepiece Respirator
SCBA
Overview
Mask Fit Testing ensures that an N95, half-face, or full-face respirator fits each individual properly while performing their work activities. Regulatory bodies such as CSA, OSHA, and NIOSH have standardized movements and protocols to evaluate whether the mask provides a complete seal.
A respirator mask fit test confirms that the mask is correctly fitted to the wearer’s face, providing the highest level of protection. At STS Canada, we offer both qualitative and quantitative mask fit testing in Markham and across Ontario, helping workers meet WSIB and CSA compliance requirements.
Qualitative Mask Fit Testing
Qualitative mask fit tests rely on the wearer’s subjective assessment of face seal leakage. This method uses taste or smell to detect any leaks and ensures your N95, half-face, or full-face respirator fits properly.
Quantitative Mask Fit Testing
Quantitative mask fit tests provide an objective measurement of facial fit using specialized equipment. They can test all types of tight-fitting masks : disposable, half-face, and full-face and provide a direct numerical result called a Fit Factor.
Who Needs a Respirator Mask Fit Test
Workers who wear respirators for their job must complete CSA- and WSIB-compliant mask fit testing:
At least every two years
If they have gained or lost 15 lbs
When using a new respirator
How to Prepare for Your Mask Fit Testing:
To ensure accurate results, please follow these guidelines before your test:
Do not smoke, eat, chew gum, or drink anything (except water) 20 minutes before the test
Be clean-shaven in areas where the respirator seals to your face
What You’ll Learn
At STS Group, we provide CSA- and WSIB-compliant qualitative (QLFT) and quantitative (QNFT) mask fit testing to ensure your respirator fits properly and provides maximum protection.
Key Takeaways from Your Fit Test:
General knowledge about your N95, half-face, or full-face respirator
How to properly don and doff your respirator
How to perform seal checks for a secure fit
Tips on caring for and maintaining your respirator
Who Should Attend?
Our CSA- and WSIB-compliant mask fit testing is designed for a wide range of workers and students who require proper respirator use:
Recommended Participants:
Healthcare professionals and practitioners
Students in healthcare programs
Construction and industrial workers
Laboratory personnel
Whether you’re in healthcare, industrial, or educational settings, our qualitative and quantitative mask fit tests ensure compliance and safety for all participants.
Service Objectives
At STS Group, our mask fit testing services are designed to ensure workplace safety and compliance. Our key objectives include:
Key Objectives:
- Provide a printed worker report to the employer for documentation and compliance
- Offer alternative respirator options if the current mask does not meet minimum fit standards
- Suggest solutions to control exposure in areas identified with poor air quality
- Objectively evaluate the fit of N95, half-face, and full-face masks to ensure maximum protection
Legislation & Standards
Our mask fit testing services comply with major safety and respiratory protection regulations, ensuring your workplace meets all legal and industry requirements. Relevant standards include:
Applicable Legislation & Guidelines:
OSHA 29 CFR 1910.134 – Respiratory Protection Standard
CDC Tuberculosis Guideline – Respiratory safety in healthcare
Joint Commission (LD.1.30) – Safety compliance for healthcare facilities
OSHA/CDC/WHO Pandemic & Terrorism Preparedness Guidelines
ANSI Z88.10 & CSA Z94.4 (Canada) – Canadian standards for respirator fit testing
Certification
Upon successful completion of your mask fit test, participants will receive official documentation that verifies their compliance and readiness to work safely:
Included Certification:
Wallet Card – proof of successful fit test for daily use
Record of Training – detailed documentation for employers and compliance records
Think you’re covered?
You might be, but why take the risk? Workplace respiratory hazards can have long-term effects.
Common Workplace Respiratory Risks:
Occupational Asthma: Caused by over 300 chemicals, affecting roughly 5% of adults annually.
Chronic Obstructive Pulmonary Disease (COPD): About 15% of cases are work-related.
Lung Cancer: Workplace exposure accounts for 15% of diagnoses.
Respiratory illnesses often develop slowly and may take years of repeated exposure to appear. By the time symptoms show, it could be too late.
How Our Mask Fit Test Protects You:
Our CSA- and WSIB-compliant respirator mask fit test teaches the correct way to wear and remove your respirator. We help you identify the right make, model, type, and size for a secure and comfortable fit. A properly fitted respirator stops harmful airborne particles from entering your lungs, keeping you safe on the job.
We can help
At STS Group, our team of Fit Test Certified professionals will ensure you find a respirator that provides an effective seal for maximum protection.
Following the Canadian Standards Association (CSA Z94.4-02) guidelines for the selection, care, and use of respirators, our program includes both theoretical and practical components to teach proper respiratory protection techniques.
Why choose us?
Convenient Scheduling: Call us to book a time that works best for you.
In-House & On-Site Testing: We can fit test your workers directly at your workplace.
Group Discounts: Contact us for a quote and save on team bookings.
Certified & Compliant: Our training and fit testing follow CSA, WSIB, and OSHA regulatory standards.
Learn More About Mask Fit Testing
- Mastering N95 Mask Fit Testing: Your Essential Guide for Safety and Compliance
Learn the step-by-step process for proper N95 mask fit testing, including donning techniques, seal checks, and compliance requirements.
- Mask Fit Testing FAQs: Everything You Need to Know for Optimal Safety
Get answers to the most common mask fit testing questions, from certification requirements to what to expect during your appointment.
- Employer’s Guide to Mask Fit Testing in Ontario
A complete beginner-friendly introduction to mask fit testing, why it’s needed, who needs it, and how the process works in Ontario.
- Qualitative vs Quantitative Mask Fit Testing: Which Method Is Right for You?
Understand the differences between qualitative and quantitative mask fit tests to choose the best method for your workplace or institution.
Frequently Asked Questions
1. How long does a mask fit test take?
A qualitative fit test takes about 15 minutes, while a quantitative test may take up to 30 minutes.
2. How often should I be fit tested?
You should be fit tested every two years, or sooner if you’ve gained/lost 15 lbs or started using a new respirator.
3. Can I eat or drink before a fit test?
Please avoid eating, drinking (except water), smoking, or chewing gum at least 20 minutes before your appointment.
4. Is mask fit testing mandatory in Ontario?
Yes. CSA- and WSIB-compliant respirator fit testing is required by law for workers in healthcare, construction, and other high-risk environments.
Cure tomorrow’s illness, today. Book your respirator mask fit test and protect your workforce.