ARMBRUST MASK TESTING
Independent Lab Results · 969 Masks · Updated 2026
We tested 969 face masks. 58% failed independent verification.
Every mask we could find on the market, tested in a certified ISO 17025 lab. Pass/fail by official standard. Hands-on review on 521 of them. Hold every brand accountable.
By Lloyd Armbrust, Founder & Lab Tester
Testing Methodology · Updated through 2026
rows classified from the mask testing source data
CDC-sourced reviews preserved for authority building
Armbrust-tested articles ranked with cohort statistics
highest-priority reviews with parsed positioning data
Pass Rate by Standard
- KN95
- High variance by manufacturer and labeling discipline
- N95
- Stronger floor when certification and fit are real
- KF94
- Often strong filtration, with breathability depending on build
- Surgical
- Wide spread across commodity imports and ASTM-level products
Country Signals
- USA
- Domestic production with repeatable lab accountability
- China
- Largest sample size and the widest pass/fail spread
- Korea
- KF94 boat-style masks with strong packaging norms
- Mexico
- Smaller cohort, useful for sourcing comparison
- Vietnam
- Tracked as part of the global supply picture
Recent Test Updates
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How the Lab Test Works
Each mask is tested for particulate filtration efficiency and airflow resistance, then judged against the standard it claims. The goal is not a vibes-based recommendation list. It is a public accountability record for every mask we could get into the lab.