ASTM Mask Levels Explained: Level 1, 2 & 3 — Which Does Your Canadian Clinic Need?

July 17, 2026

Understanding ASTM F2100 Mask Standards

For Canadian healthcare facilities, selecting the right surgical mask isn't just about comfort—it's about compliance with infection control standards. The ASTM F2100 standard is the benchmark for medical face masks in North America, classifying masks into three performance levels: Level 1, Level 2, and Level 3. Each level corresponds to increasing protection against fluid penetration, bacterial filtration efficiency (BFE), and particulate filtration efficiency (PFE).

Whether you're managing a dental clinic, a family practice, or a walk-in clinic in Canada, understanding these distinctions is critical for both regulatory compliance and patient safety. Let's break down what each ASTM level means and which one your clinic actually needs.

What Is ASTM F2100?

ASTM International (formerly the American Society for Testing and Materials) developed the F2100 standard to evaluate the performance of materials used in medical face masks. The standard tests masks on several key parameters:

BFE (Bacterial Filtration Efficiency) — Measures how well the mask filters bacteria-sized particles (3.0 microns). ASTM F2100 sets the BFE floor at ≥95% for Level 1 and ≥98% for Levels 2 and 3.
PFE (Particulate Filtration Efficiency) — Tests filtration of sub-micron particles (0.1 microns) at 28 L/min flow rate. Level 1 requires ≥95%, while Levels 2 and 3 require ≥98%.
Fluid Resistance — Measures how well the mask resists penetration by synthetic blood under pressure. This is the main differentiator between levels.
Delta P (Breathability) — Differential pressure testing ensures the mask is breathable while providing adequate filtration.
Flame Spread — All medical masks must pass Class 1 flame spread requirements.

CPAP accessories pack: mask, tubing and filters

ASTM Level 1: Low Barrier Protection

Recommended for: General use, low-risk settings, and non-surgical environments.

ASTM Level 1 masks offer the lowest barrier protection of the three levels, with ≥95% BFE/PFE and minimal fluid resistance (80 mmHg). These are suitable for:

General examination rooms
Wellness clinics and vaccination centres
Dental check-ups and cleanings
Administrative areas in healthcare facilities

Level 1 masks are often the most economical choice for high-volume clinics where the risk of fluid exposure is minimal. Many Canadian clinics use Level 1 masks for standard patient interactions and reserve higher levels for procedures.

ASTM Level 2: Moderate Barrier Protection

Recommended for: Moderate-risk procedures with potential for fluid splash or spray.

Level 2 masks step up with ≥98% BFE/PFE and 120 mmHg fluid resistance. This is the most common level used in Canadian healthcare settings because it offers a solid balance of protection and value. Typical applications include:

Minor surgical procedures
Emergency departments
Phlebotomy and IV insertion
Dental procedures generating aerosols

For most Canadian medical clinics, ASTM Level 2 represents the sweet spot—sufficient protection for the majority of clinical encounters without the premium cost of Level 3.

ASTM Level 2 surgical masks for Canadian clinics

ASTM Level 3: High Barrier Protection

Recommended for: High-risk, fluid-heavy procedures and surgical environments.

Level 3 masks provide the highest barrier protection with ≥98% BFE/PFE and a robust 160 mmHg fluid resistance. These masks are essential for:

Major surgeries and operating rooms
Trauma care and emergency surgery
Procedures with heavy fluid or blood exposure
Intubation and respiratory care

While Level 3 masks offer the most protection, they also tend to be thicker and may feel less breathable for extended wear. Most Canadian clinics do not need Level 3 for routine patient care—reserve them for the specific high-risk scenarios that genuinely require the extra barrier.

Which Level Does Your Canadian Clinic Need?

Here's a quick decision guide for Canadian healthcare procurement:

Dental clinics: Levels 1–2 for examinations, Level 2–3 for aerosol-generating procedures
Family medicine / walk-in clinics: Level 1 for exams, Level 2 for minor procedures
Urgent care / emergency: Level 2 primary, Level 3 for trauma
Long-term care homes: Level 2 for most resident care
Specialist clinics (dermatology, ophthalmology): Level 1–2 depending on procedure type

Many Canadian clinics find that stocking both Level 1 and Level 2 masks gives them the flexibility to match protection to the task without overspending on unnecessary high-level barriers.

Medical mask inventory for Canadian healthcare facilities

ASTM Certification and Compliance in Canada

In Canada, medical masks sold as "surgical masks" or "procedure masks" should carry ASTM F2100 certification. Health Canada recognizes the ASTM standard and masks labelled with ASTM levels have been tested by accredited laboratories. When sourcing masks for your clinic, always verify that the supplier provides documentation of ASTM testing and that the certification is current.

Look for masks with clear labelling of the ASTM level on the packaging, and request test reports from your supplier to confirm BFE, PFE, fluid resistance, and Delta P values.

Conclusion

Choosing the right ASTM mask level is about matching protection to risk. Level 1 for low-risk exams, Level 2 as your daily workhorse for most clinical care, and Level 3 reserved for high-fluid surgical environments. A smart procurement strategy ensures your Canadian clinic stays compliant, protects your staff, and manages costs effectively.

At CliniEco Medical, we supply a full range of ASTM F2100-certified surgical masks—Level 1, 2, and 3—delivered across Canada. Our bulk procurement options help clinics and healthcare facilities maintain consistent inventory while controlling costs. Browse our selection of ASTM-certified masks or contact our team for a customized supply plan.

Frequently Asked Questions

What does the ASTM F2100 level on a mask mean?

ASTM F2100 ranks medical face masks into three performance levels based on bacterial filtration efficiency (BFE), particulate filtration efficiency (PFE) and fluid resistance. Level 1 is the low-barrier tier for routine exams, Level 2 adds ≥98% BFE/PFE with 120 mmHg fluid resistance and suits most daily clinical care, and Level 3 reaches 160 mmHg fluid resistance for surgery and high-fluid procedures. The level on the package tells a procurement team how much barrier the mask provides before any procedure begins.

Which ASTM level does a Canadian dental clinic need?

A dental clinic typically uses Level 1 or Level 2 masks for examinations and Level 2 or Level 3 for aerosol-generating procedures such as ultrasonic scaling and high-speed drilling. Many clinics stock both levels so staff can match protection to the task without paying Level 3 prices for routine exams.

What is the difference between Level 2 and Level 3 masks?

Both levels filter at ≥98% BFE/PFE, but Level 3 resists fluid penetration at 160 mmHg versus 120 mmHg for Level 2. Level 3 masks are also generally thicker and slightly less breathable, so they are reserved for surgery, trauma and procedures with heavy fluid exposure. Level 2 is the practical daily choice for most Canadian clinics, with ASTM Level 3 masks held for high-risk cases.

How can a buyer verify a mask's ASTM level?

Check the package label for the ASTM F2100 level and ask the supplier for the test report showing BFE, PFE, fluid resistance and Delta P values. Masks labelled ASTM Level 1, 2 or 3 should be tested by an accredited laboratory; if the supplier cannot produce documentation, treat the claim as unverified.

Where can Canadian clinics buy ASTM Level 1, 2 and 3 masks?

CliniEco Medical carries the full range: ASTM Level 1 procedure masks, Level 2 masks made in Canada and Level 3 surgical masks, with bulk case pricing for clinics that stock two levels at once. Documentation for each lot is available on request for procurement files.

Also read: see our complete infection-prevention PPE guide for Canadian healthcare.