If you manage a clinic, dental practice, or long-term care home in Canada, you have probably stood in front of a supply shelf and asked yourself what actually separates a Level 2 face mask from a Level 3 face mask. Fair question. The two boxes look alike, the masks feel alike, and the price difference is small. The real difference lives in one number on the label, and it can matter a great deal on a busy shift.
This guide breaks down the ASTM F2100 standard, explains the three test results that decide a mask's level, and walks through how to match the right mask to the work your team does. No jargon, no fluff. Just what a manager needs to order with confidence.
What ASTM F2100 Is and Why It Matters in Canada
ASTM F2100 is the performance standard for medical face masks across North America. ASTM International, the organization behind it, has been writing technical standards since 1898, and its F2100 specification sets the minimum performance for masks used in healthcare settings. When Health Canada licenses a medical mask as a Class I medical device, the manufacturer's claims are checked against this same standard. That is why compliant boxes carry the letters ASTM F2100 somewhere on the label.
Here is what a lot of buyers miss. ASTM F2100 does not grade the fabric or the stitching. It grades the finished mask against laboratory tests that mimic real exposure. A mask that passes Level 3 testing has proven itself under a specific set of challenges, and that proof matters more than the colour of the earloop or the number of pleats.
The Three Numbers That Decide a Mask's Level
Three metrics drive the level rating: bacterial filtration efficiency (BFE), particulate filtration efficiency (PFE), and fluid resistance. BFE measures how well the mask stops aerosolized bacteria, usually Staphylococcus aureus, in a standardized test. PFE measures filtration of particles down to 0.1 microns, the size range where respiratory droplets and many viruses travel.
Fluid resistance is the metric people forget. The test is straightforward: a mask sample is mounted, and synthetic blood is sprayed at it under increasing pressure, measured in millimetres of mercury (mm Hg). A Level 1 mask holds at 80 mm Hg. A Level 2 mask holds at 120 mm Hg. A Level 3 mask holds at 160 mm Hg. Splashes during procedures can spike past 80 mm Hg without warning, which is why Level 1 is not enough for every job.
One more thing about that 0.1 micron number. Surgical masks are not respirators, and no level of ASTM F2100 turns a mask into an N95. The standard measures barrier performance, not fit. If your team needs protection against airborne particles, NIOSH-approved respirators are a separate category with their own certification. Masks and respirators complement each other, and both have a place in a well-stocked clinic.
Level 2 vs Level 3: Side by Side
Here is the short version. Both levels filter 98% of bacteria and 98% of particles at 0.1 microns, so on filtration they are nearly identical. The real gap is fluid resistance, where Level 3 stops fluid at 160 mm Hg compared to 120 mm Hg for Level 2.
| Property | Level 2 Mask | Level 3 Mask |
|---|---|---|
| Bacterial filtration efficiency (BFE) | ≥ 98% | ≥ 98% |
| Particulate filtration efficiency (PFE, 0.1 microns) | ≥ 98% | ≥ 98% |
| Fluid resistance | 120 mm Hg | 160 mm Hg |
| Typical use | Exams and low-splash care | Procedures with splash and aerosols |
That table changes how you stock. If your staff see low-risk patients in a calm exam room, a Level 2 mask gives you solid protection at a lower cost per unit. If anyone in the building performs procedures that spray, splash, or aerosolize, Level 3 is the mask you want within arm's reach.
Budget is the honest part of this conversation. Level 3 masks cost more per unit than Level 2, and in a clinic that burns through a case a week, the difference adds up over a year. That is exactly why you should match levels to tasks instead of buying one level for everything. A mask that sits unused in a drawer is not protection, it is inventory.
How to Choose the Right Level for Your Setting
Dental operators are the clearest case. Drilling, ultrasonic scaling, and air polishing throw off droplets and splatter all day, and provincial regulators expect practices to protect staff accordingly. For aerosol-generating procedures, a Level 3 mask is the practical default, and many dental clinics in BC keep both levels on hand: Level 3 for treatment rooms, Level 2 for front desk and administrative staff.
The same logic applies to hygiene teams and dental assistants, who sit closest to the aerosol plume. If you are ordering for a dental office, count the number of aerosol-generating procedures per day and size your Level 3 stock around that number, not around the headcount. Reception and booking staff rarely need anything beyond Level 2.
Long-term care homes face a different rhythm. Most daily care is low-splash work, but respiratory season changes the picture. When a unit goes on outbreak precautions, residents cough, sneeze, and sometimes need suctioning or oral care that produces spray. Many homes run Level 2 for routine shifts and pull Level 3 masks when an outbreak is declared, a sensible balance between protection and budget.
Public Health Agency of Canada guidance for long-term care settings has consistently pointed the same direction: use medical masks with higher fluid resistance for care activities that can generate droplets, and upgrade during outbreaks. Aligning your stock levels with that guidance makes audits simpler and keeps care teams on the same page.
Veterinary clinics sit in the middle. Small animal practice involves bites, scratches, and the occasional pressurized fountain of fluids, and a Level 3 mask is rarely the wrong call in a treatment room. Family doctors and walk-in clinics, by contrast, can run Level 2 day to day and keep a stash of Level 3 for wound care, minor procedures, and respiratory season.
One habit helps in every setting: label your storage. Out of the case, Level 2 and Level 3 masks look identical, and staff will grab whatever is sitting on the pile. Keep the two levels in separate, clearly marked bins, and put the higher level closer to the rooms where splash risk lives.
Fit matters more than the number on the box. A Level 3 mask that gaps at the nose is less protective than a Level 2 mask that seals properly. Train staff on the basics: pinch the nose wire, pull the bottom edge under the chin, and check that the mask moves with your breath. A quick fit check takes ten seconds and costs nothing.
It also pays to know where your masks are made. Canadian-made masks from facilities operating under ISO 13485 quality management give you a shorter supply chain and easier traceability. The Aurelia line at CliniEco is a good example: the Aurelia Level 2 face mask and the Aurelia Level 3 face mask are both made in Canada and tested to ASTM F2100. For teams that want a proven three-ply option alongside them, the CliniEco medical face mask 3-ply Level 3 rounds out the shelf.
Related reading
Frequently Asked Questions
What does the level number on a face mask box mean?
The level refers to ASTM F2100 performance testing. Level 1 masks filter at least 95% of bacteria and particles and resist fluid at 80 mm Hg, Level 2 filters at least 98% and resists 120 mm Hg, and Level 3 filters at least 98% and resists 160 mm Hg. The higher the level, the more fluid pressure the mask handles before breakthrough.
How do I verify that a mask is really made in Canada?
Start with the label. Canadian-made masks from licensed facilities list the manufacturer, the medical device licence information, and the ASTM F2100 claim. Aurelia masks from CliniEco are made in Canada and tested to ASTM F2100, and the product pages list the full details so you can check before you order.
Do Level 3 masks filter more bacteria than Level 2 masks?
No. Both levels filter at least 98% of bacteria (BFE) and 98% of particles at 0.1 microns (PFE). The difference is fluid resistance: 160 mm Hg for Level 3 versus 120 mm Hg for Level 2. Choose Level 3 when splashes or aerosols are likely, not because it filters more.
Which level do dental clinics need in Canada?
For aerosol-generating procedures such as drilling and ultrasonic scaling, a Level 3 mask rated at 160 mm Hg is the practical standard, and provincial dental regulators expect clinics to protect staff against splatter. Level 2 masks work for non-aerosol tasks and administrative areas.
Where can I buy Aurelia Level 2 and Level 3 masks in Canada?
CliniEco carries both: the Aurelia Level 2 mask in a 50-count box and the Aurelia Level 3 mask in a 50-count box, plus the CliniEco three-ply Level 3 mask for teams that want a second option. All ship from within Canada.
Related Reading
Explore more guides in this category:
0 commentaire