.png)
If you're sourcing respiratory protection in Canada, whether for a hospital, clinic, or front-line workforce, you've likely encountered both N95 and KN95 respirators. They look similar, carry similar names, and both filter at least 95% of airborne particles. So what's actually different, and which one is right for your team?
At Surgo, we work with Canadian healthcare purchasers every day, and this is one of the most common questions we get. Here's a plain-language breakdown of everything you need to know.
What Are N95 and KN95 Masks?
Both the N95 and KN95 are filtering facepiece respirators (FFRs) — a class of mask designed to form a tight seal against the face and filter airborne particles, including bacteria, viruses, dust, and other hazardous aerosols.
The critical distinction between them is their certification standard and country of origin:
- N95 — Certified by the U.S. National Institute for Occupational Safety and Health (NIOSH) under American standards
- KN95 — Certified to China's GB 2626-2019 standard, the most widely used respirator standard globally
Both require the mask to filter at least 95% of airborne particles as small as 0.3 microns.
Canadian context: Canada also has its own respirator certification — the CA-N95, established by the CSA Group under standard CSA Z94.4.1:21. Any respirator carrying a CA-N95 marking meets or exceeds NIOSH N95 requirements and is tested by a Health Canada-approved facility. If you're sourcing domestically, look for this designation.
N95 vs. KN95: Key Differences at a Glance
| Feature | N95 | KN95 |
|---|---|---|
| Certifying body | NIOSH (USA) | China GB 2626-2019 |
| Minimum filtration | 95% | 95% |
| Fit testing required? | No (standard doesn't require it) | Yes (real-human fit test required) |
| Headband or ear loops? | Headbands required | Ear loops permitted |
| Breathability standards | Stricter (lower inhalation/exhalation resistance) | Slightly less strict |
| Canadian healthcare use | NIOSH-approved N95s accepted | Approved for general/public use; not typically used for clinical care |
| Canadian equivalent | CA-N95 (CSA Z94.4.1) | — |
The Fit Question: Why It Matters More Than You Think
One of the most important real-world differences between these two respirators is fit design.
N95 masks use headbands that wrap around the back of the head, applying consistent pressure to maintain a tight seal. KN95 masks typically use ear loops, which apply less tension and can result in a less secure seal — particularly around the nose and cheeks.
Health Canada and the Canadian Centre for Occupational Health and Safety (CCOHS) both emphasise that a respirator only works as well as its fit. In clinical settings, CCOHS recommends that respirators be selected and used in accordance with CSA Standard Z94.4, which requires mandatory fit testing for healthcare workers.
Important note for purchasing managers: Some KN95 models — especially those with ear loops — have been flagged by testing bodies for poor fit. Health Canada has previously requested that KN95 products failing to meet the 95% filtration threshold be relabelled as face masks, not respirators. Always source from verified suppliers and ask for test documentation.
What Does Health Canada Say About KN95 Masks?
Health Canada recognises KN95 respirators as a valid option for general public use, and approved select KN95 models as alternatives during periods of N95 shortage. Public Works and Government Services Canada maintains a list of NIOSH N95 alternatives, which includes certain qualified KN95 products.
For healthcare and clinical settings, Health Canada and CCOHS guidance points to:
- NIOSH-certified N95 respirators (with an approval number in the format TC-84A-####)
- CSA-certified CA-N95 or CA-N99 respirators (marked according to CSA Z94.4.1)
- 95PFE products approved under Health Canada's framework
KN95 masks are generally not considered suitable substitutes for clinical care where aerosol-generating procedures may occur, according to Canadian health authorities.
Are KN95 Masks Safe?
Yes — when purchased from a reputable, verified supplier and worn correctly, KN95 masks provide meaningful protection against airborne particles. Mask manufacturer 3M has noted it is reasonable to consider China's KN95 standard as equivalent to U.S. N95 and European FFP2 respirators for general protection purposes.
That said, the Canadian market has seen a significant number of counterfeit and substandard KN95 products. The Canadian Dental Association and Health Canada have both flagged that numerous KN95 models have failed to meet the 95% filtration threshold. Buyers should exercise due diligence.
How to Spot a Counterfeit or Substandard KN95
Before making a bulk purchase, use this checklist:
- Request the manufacturer's filtration test report — a legitimate KN95 supplier will provide this
- Check the packaging markings — look for the manufacturer's name, GB 2626-2019 standard reference, and model number
- Verify the filtration efficiency — it must be ≥95%
- Assess the head harness — ear loop designs carry higher fit-failure risk than headband designs
- Request samples before committing to a large order
- Cross-reference the manufacturer against Health Canada's approved list or the FDA's authorized KN95 manufacturers list
- Be wary of very low prices — they often signal substandard or counterfeit product
Which Mask Should Canadian Healthcare Teams Choose?
Here's a practical guide based on your setting and role:
For clinical and healthcare workers (hospitals, clinics, long-term care): Use a NIOSH-certified N95 or a CSA CA-N95 respirator — both are accepted by Health Canada for medical use. Ensure workers are fit-tested in accordance with CSA Z94.4 requirements. For aerosol-generating medical procedures, higher protection (N99, elastomeric respirators, or powered air-purifying respirators) may be warranted.
For the general public, front-line non-clinical workers, and administrative staff: A well-fitting KN95 from a verified supplier provides strong protection and is recommended by Health Canada for public use. It offers significantly more protection than a surgical or cloth mask.
For Canadian-made options: Look for CA-N95 certified respirators tested by Health Canada-approved facilities. These meet or exceed NIOSH N95 standards and are subject to rigorous fit testing requirements under the CSA Z94.4.1 standard.
Where to Buy Reliable KN95 and N95 Masks in Canada
Surgo Surgical Supply offers verified KN95 and N95 respirators for Canadian healthcare teams, clinics, and purchasing managers. Our team works directly with trusted manufacturers and can provide product documentation on request.
When sourcing respiratory PPE for your team, don't compromise on quality. A mask that doesn't perform to standard isn't protection — it's a liability.
Shop KN95 Masks at Surgo →
Shop N95 Masks at Surgo →
Frequently Asked Questions (FAQ)
Is a KN95 mask equivalent to an N95?
In terms of filtration efficiency, both are rated to capture at least 95% of airborne particles 0.3 microns or larger. However, they differ in certification body, fit requirements, and design. NIOSH-certified N95s use headbands and are approved for clinical healthcare use in Canada. KN95s use ear loops, are certified to China's GB 2626-2019 standard, and are approved by Health Canada for general public use — but are not typically accepted for clinical care without additional verification.
Which mask is better: N95 or KN95?
It depends on the context. For clinical healthcare settings in Canada, a NIOSH-certified N95 or CSA CA-N95 is the appropriate choice. For everyday public protection or non-clinical front-line work, a quality KN95 from a verified supplier offers excellent protection. N95s have stricter breathability standards; KN95s are required to pass a real-human fit test — a requirement N95 certification does not mandate.
What is a CA-N95 mask?
The CA-N95 is Canada's own respirator certification, created by the CSA Group under standard CSA Z94.4.1:21. It meets or exceeds NIOSH N95 requirements and includes additional testing, such as three levels of inhalation and exhalation resistance testing (versus one under NIOSH), and mandatory quantitative fit testing on a diverse group of individuals. Respirators with CA-N95 certification are tested by Health Canada-approved facilities.
Are KN95 masks approved by Health Canada?
Health Canada has approved select KN95 models as alternatives to N95 respirators and recommends them for general public use. However, Health Canada has also flagged that some KN95 models on the market fail to meet the 95% filtration standard. Always purchase from a reputable, documented supplier and ask for test reports.
Can KN95 masks be used in Canadian hospitals?
Generally, KN95 masks are not the preferred choice for clinical healthcare settings in Canada. Canadian health authorities recommend NIOSH-certified N95s or CSA CA-N95 respirators for clinical use — particularly for aerosol-generating procedures. KN95s may be used in lower-risk healthcare-adjacent roles at the discretion of the facility, following a point-of-care risk assessment.
How long can you wear an N95 or KN95 mask?
N95 and KN95 respirators should not be worn beyond 8 hours of accumulated use. Extended use can fatigue the nose strip, ear loops, or headband, compromising the seal and reducing filtration effectiveness. Moisture from breathing can also degrade the mask's filtration materials over time.
Can you wash or reuse an N95 or KN95?
No. N95, KN95, and CA-N95 respirators should not be washed or sanitised. Washing can disrupt the nonwoven fibres inside the mask and reduce its electrostatic charge, which is key to its filtration effectiveness. These are designed as single-use or limited-use devices.
How do I know if my KN95 is counterfeit?
Look for the manufacturer's name and the GB 2626-2019 standard marking on the packaging. Request a filtration test report from your supplier. Cross-reference the manufacturer against Health Canada's approved list. Be sceptical of unusually low prices, vague labelling, or missing documentation. Ear-loop-only designs have a higher risk of poor fit and failed filtration testing.
What's the difference between a respirator and a surgical mask?
A surgical mask (also called a procedural or medical mask) is primarily designed to prevent droplets and fluids from leaving the wearer's mouth — it is not designed to seal against the face. A respirator (N95, KN95, CA-N95) is designed to seal tightly against the face and actively filter the air you breathe in. Respirators provide significantly more protection against airborne particles.
Surgo Surgical Supply is a Canadian supplier of medical-grade PPE, including N95 and KN95 respirators, for healthcare teams across the country. For purchasing inquiries or product documentation, contact our team.
If you're sourcing respiratory protection in Canada, whether for a hospital, clinic, or front-line workforce, you've likely encountered both N95 and KN95 respirators. They look similar, carry similar names, and both filter at least 95% of airborne particles. So what's actually different, and which one is right for your team?
At Surgo, we work with Canadian healthcare purchasers every day, and this is one of the most common questions we get. Here's a plain-language breakdown of everything you need to know.
What Are N95 and KN95 Masks?
Both the N95 and KN95 are filtering facepiece respirators (FFRs) — a class of mask designed to form a tight seal against the face and filter airborne particles, including bacteria, viruses, dust, and other hazardous aerosols.
The critical distinction between them is their certification standard and country of origin:
- N95 — Certified by the U.S. National Institute for Occupational Safety and Health (NIOSH) under American standards
- KN95 — Certified to China's GB 2626-2019 standard, the most widely used respirator standard globally
Both require the mask to filter at least 95% of airborne particles as small as 0.3 microns.
Canadian context: Canada also has its own respirator certification — the CA-N95, established by the CSA Group under standard CSA Z94.4.1:21. Any respirator carrying a CA-N95 marking meets or exceeds NIOSH N95 requirements and is tested by a Health Canada-approved facility. If you're sourcing domestically, look for this designation.
N95 vs. KN95: Key Differences at a Glance
| Feature | N95 | KN95 |
|---|---|---|
| Certifying body | NIOSH (USA) | China GB 2626-2019 |
| Minimum filtration | 95% | 95% |
| Fit testing required? | No (standard doesn't require it) | Yes (real-human fit test required) |
| Headband or ear loops? | Headbands required | Ear loops permitted |
| Breathability standards | Stricter (lower inhalation/exhalation resistance) | Slightly less strict |
| Canadian healthcare use | NIOSH-approved N95s accepted | Approved for general/public use; not typically used for clinical care |
| Canadian equivalent | CA-N95 (CSA Z94.4.1) | — |
The Fit Question: Why It Matters More Than You Think
One of the most important real-world differences between these two respirators is fit design.
N95 masks use headbands that wrap around the back of the head, applying consistent pressure to maintain a tight seal. KN95 masks typically use ear loops, which apply less tension and can result in a less secure seal — particularly around the nose and cheeks.
Health Canada and the Canadian Centre for Occupational Health and Safety (CCOHS) both emphasise that a respirator only works as well as its fit. In clinical settings, CCOHS recommends that respirators be selected and used in accordance with CSA Standard Z94.4, which requires mandatory fit testing for healthcare workers.
Important note for purchasing managers: Some KN95 models — especially those with ear loops — have been flagged by testing bodies for poor fit. Health Canada has previously requested that KN95 products failing to meet the 95% filtration threshold be relabelled as face masks, not respirators. Always source from verified suppliers and ask for test documentation.
What Does Health Canada Say About KN95 Masks?
Health Canada recognises KN95 respirators as a valid option for general public use, and approved select KN95 models as alternatives during periods of N95 shortage. Public Works and Government Services Canada maintains a list of NIOSH N95 alternatives, which includes certain qualified KN95 products.
For healthcare and clinical settings, Health Canada and CCOHS guidance points to:
- NIOSH-certified N95 respirators (with an approval number in the format TC-84A-####)
- CSA-certified CA-N95 or CA-N99 respirators (marked according to CSA Z94.4.1)
- 95PFE products approved under Health Canada's framework
KN95 masks are generally not considered suitable substitutes for clinical care where aerosol-generating procedures may occur, according to Canadian health authorities.
Are KN95 Masks Safe?
Yes — when purchased from a reputable, verified supplier and worn correctly, KN95 masks provide meaningful protection against airborne particles. Mask manufacturer 3M has noted it is reasonable to consider China's KN95 standard as equivalent to U.S. N95 and European FFP2 respirators for general protection purposes.
That said, the Canadian market has seen a significant number of counterfeit and substandard KN95 products. The Canadian Dental Association and Health Canada have both flagged that numerous KN95 models have failed to meet the 95% filtration threshold. Buyers should exercise due diligence.
How to Spot a Counterfeit or Substandard KN95
Before making a bulk purchase, use this checklist:
- Request the manufacturer's filtration test report — a legitimate KN95 supplier will provide this
- Check the packaging markings — look for the manufacturer's name, GB 2626-2019 standard reference, and model number
- Verify the filtration efficiency — it must be ≥95%
- Assess the head harness — ear loop designs carry higher fit-failure risk than headband designs
- Request samples before committing to a large order
- Cross-reference the manufacturer against Health Canada's approved list or the FDA's authorized KN95 manufacturers list
- Be wary of very low prices — they often signal substandard or counterfeit product
Which Mask Should Canadian Healthcare Teams Choose?
Here's a practical guide based on your setting and role:
For clinical and healthcare workers (hospitals, clinics, long-term care): Use a NIOSH-certified N95 or a CSA CA-N95 respirator — both are accepted by Health Canada for medical use. Ensure workers are fit-tested in accordance with CSA Z94.4 requirements. For aerosol-generating medical procedures, higher protection (N99, elastomeric respirators, or powered air-purifying respirators) may be warranted.
For the general public, front-line non-clinical workers, and administrative staff: A well-fitting KN95 from a verified supplier provides strong protection and is recommended by Health Canada for public use. It offers significantly more protection than a surgical or cloth mask.
For Canadian-made options: Look for CA-N95 certified respirators tested by Health Canada-approved facilities. These meet or exceed NIOSH N95 standards and are subject to rigorous fit testing requirements under the CSA Z94.4.1 standard.
Where to Buy Reliable KN95 and N95 Masks in Canada
Surgo Surgical Supply offers verified KN95 and N95 respirators for Canadian healthcare teams, clinics, and purchasing managers. Our team works directly with trusted manufacturers and can provide product documentation on request.
When sourcing respiratory PPE for your team, don't compromise on quality. A mask that doesn't perform to standard isn't protection — it's a liability.
Shop KN95 Masks at Surgo →
Shop N95 Masks at Surgo →
Frequently Asked Questions (FAQ)
Is a KN95 mask equivalent to an N95?
In terms of filtration efficiency, both are rated to capture at least 95% of airborne particles 0.3 microns or larger. However, they differ in certification body, fit requirements, and design. NIOSH-certified N95s use headbands and are approved for clinical healthcare use in Canada. KN95s use ear loops, are certified to China's GB 2626-2019 standard, and are approved by Health Canada for general public use — but are not typically accepted for clinical care without additional verification.
Which mask is better: N95 or KN95?
It depends on the context. For clinical healthcare settings in Canada, a NIOSH-certified N95 or CSA CA-N95 is the appropriate choice. For everyday public protection or non-clinical front-line work, a quality KN95 from a verified supplier offers excellent protection. N95s have stricter breathability standards; KN95s are required to pass a real-human fit test — a requirement N95 certification does not mandate.
What is a CA-N95 mask?
The CA-N95 is Canada's own respirator certification, created by the CSA Group under standard CSA Z94.4.1:21. It meets or exceeds NIOSH N95 requirements and includes additional testing, such as three levels of inhalation and exhalation resistance testing (versus one under NIOSH), and mandatory quantitative fit testing on a diverse group of individuals. Respirators with CA-N95 certification are tested by Health Canada-approved facilities.
Are KN95 masks approved by Health Canada?
Health Canada has approved select KN95 models as alternatives to N95 respirators and recommends them for general public use. However, Health Canada has also flagged that some KN95 models on the market fail to meet the 95% filtration standard. Always purchase from a reputable, documented supplier and ask for test reports.
Can KN95 masks be used in Canadian hospitals?
Generally, KN95 masks are not the preferred choice for clinical healthcare settings in Canada. Canadian health authorities recommend NIOSH-certified N95s or CSA CA-N95 respirators for clinical use — particularly for aerosol-generating procedures. KN95s may be used in lower-risk healthcare-adjacent roles at the discretion of the facility, following a point-of-care risk assessment.
How long can you wear an N95 or KN95 mask?
N95 and KN95 respirators should not be worn beyond 8 hours of accumulated use. Extended use can fatigue the nose strip, ear loops, or headband, compromising the seal and reducing filtration effectiveness. Moisture from breathing can also degrade the mask's filtration materials over time.
Can you wash or reuse an N95 or KN95?
No. N95, KN95, and CA-N95 respirators should not be washed or sanitised. Washing can disrupt the nonwoven fibres inside the mask and reduce its electrostatic charge, which is key to its filtration effectiveness. These are designed as single-use or limited-use devices.
How do I know if my KN95 is counterfeit?
Look for the manufacturer's name and the GB 2626-2019 standard marking on the packaging. Request a filtration test report from your supplier. Cross-reference the manufacturer against Health Canada's approved list. Be sceptical of unusually low prices, vague labelling, or missing documentation. Ear-loop-only designs have a higher risk of poor fit and failed filtration testing.
What's the difference between a respirator and a surgical mask?
A surgical mask (also called a procedural or medical mask) is primarily designed to prevent droplets and fluids from leaving the wearer's mouth — it is not designed to seal against the face. A respirator (N95, KN95, CA-N95) is designed to seal tightly against the face and actively filter the air you breathe in. Respirators provide significantly more protection against airborne particles.
Surgo Surgical Supply is a Canadian supplier of medical-grade PPE, including N95 and KN95 respirators, for healthcare teams across the country. For purchasing inquiries or product documentation, contact our team.
