Surgical Mask vs N95 vs KN95: What's the Difference for Healthcare?

17 juillet 2026

Understanding the Three Main Face Mask Types in Canadian Healthcare

If you're sourcing PPE for a Canadian healthcare facility, you've likely encountered three main categories of face masks: surgical masks, N95 respirators, and KN95 respirators. While they may look similar at a glance, each serves a fundamentally different purpose in infection control. Choosing the wrong type can compromise staff safety, violate regulatory requirements, and waste budget.

This guide breaks down the differences between surgical masks, N95s, and KN95s—what they protect against, when to use each, and how Canadian regulations affect your purchasing decisions.

CPAP accessories pack: mask, tubing and filters

Surgical Masks: Fluid Protection, Not Fit-Tested Filtration

What they are: Loose-fitting, disposable face masks designed to protect the wearer from large droplets and splashes, and to protect patients from the wearer's respiratory emissions.

Key features:

Tested to ASTM F2100 standards for BFE, PFE, and fluid resistance
Not fit-tested — they do not seal around the face
Primarily protect others from the wearer (source control)
Provide limited protection to the wearer against airborne particles
Available in Levels 1, 2, and 3 for varying fluid resistance

When to use in Canadian healthcare: Surgical masks are the standard for most patient interactions where there is no risk of airborne transmission. They are used in examination rooms, dental cleanings, routine nursing care, and as part of standard and contact precautions.

N95 Respirators: The Gold Standard for Airborne Protection

What they are: Tight-fitting respirators certified by NIOSH (U.S. National Institute for Occupational Safety and Health) that filter at least 95% of airborne particles (0.3 microns).

Key features:

Requires fit-testing — an N95 only works if it seals properly to the wearer's face
Filters both large and small particles (aerosols, airborne viruses)
Certified to 42 CFR Part 84 (NIOSH standard)
In Canada, N95s are the preferred respirator for airborne precautions
Surgical N95s add fluid resistance for operating room use

When to use in Canadian healthcare: N95 respirators are required for airborne precautions—when treating patients with known or suspected tuberculosis, measles, chickenpox, or during aerosol-generating medical procedures (intubation, bronchoscopy, CPR) on patients with respiratory infections.

Health Canada and provincial health authorities (PHAC, Ontario's MOH, BC's PHO) specify N95 respirators as the minimum standard for protection against airborne pathogens in healthcare settings.

N95 respirator certification for Canadian healthcare

KN95 Respirators: The International Alternative

What they are: Respirators certified to the Chinese GB2626-2019 standard, also filtering ≥95% of airborne particles.

Key features:

Similar filtration performance to N95 on paper (≥95% filtration)
Different testing protocols and certification requirements
May not undergo the same quality assurance as NIOSH-certified products
No requirement for fit-testing in most Canadian healthcare policies
Headband style vs. ear loop design can affect seal quality

KN95s in Canadian healthcare: During PPE shortages, Health Canada authorized KN95s as an alternative to N95s. However, they are not the preferred choice for airborne precautions in most Canadian healthcare settings. KN95s are more commonly used in industrial settings, public use, and as a backup supply. Many Canadian hospitals maintain a policy that only NIOSH-approved N95s are acceptable for airborne isolation rooms.

Head-to-Head Comparison Table

Feature	Surgical Mask	N95 Respirator	KN95 Respirator
Filtration (PFE)	≥95-98% (ASTM Level dependent)	≥95% at 0.3 microns	≥95% at 0.3 microns
Fit-Tested Required	No	Yes	Recommended but not standard
Fluid Resistance	Yes (80-160 mmHg)	Only Surgical N95s	Not standard
Certification Standard	ASTM F2100	NIOSH 42 CFR 84	GB2626-2019
Primary Use	Source control, droplet precautions	Airborne precautions	Backup/alternative to N95
Canadian Healthcare Acceptance	Widely accepted	Gold standard	Conditional/emergency use

What Canadian Regulations Say

In Canada, the CSA Z94.4 standard for selection, use, and care of respirators applies in healthcare. Provincial occupational health and safety regulations require employers to provide appropriate respiratory protection based on risk assessment. For airborne infectious diseases, this means N95 respirators (or equivalent) that are fit-tested to each wearer.

Health Canada's Medical Devices Regulations classify surgical masks as Class I or Class II medical devices, while N95 respirators intended for medical use are Class II or Class III. KN95s may be imported under interim orders but should be verified for authenticity and performance.

Making the Right Choice for Your Facility

Low-risk patient care: Surgical mask (ASTM Level 1-2) is appropriate
Aerosol-generating procedures: N95 respirator required
Airborne precaution rooms: N95 respirator, fit-tested
PPE contingency / surge capacity: KN95s as a backup option
Non-clinical staff / public areas: Surgical mask or KN95

Conclusion

Understanding the difference between surgical masks, N95s, and KN95s is essential for Canadian healthcare procurement teams. While surgical masks handle the majority of daily clinical needs, N95 respirators are irreplaceable for airborne precautions. KN95s fill a contingency role but should not be the primary choice for high-risk environments. Matching mask type to clinical risk keeps your staff safe, your facility compliant, and your budget on track.

CliniEco Medical supplies Canadian healthcare facilities with certified surgical masks (ASTM Level 1, 2, and 3), genuine NIOSH-approved N95 respirators, and verified KN95s for contingency use. Explore our full PPE range or contact us for bulk pricing tailored to your facility's needs.

Medical supplies for Canadian healthcare facilities - CliniEco Medical

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