N95 & DIY Face Mask Testing Service

Smart Air can help you test your N95, KN95 and surgical masks, and test commercially available and DIY mask materials. We will test the filtration efficiency down to 0.3 microns for your materials, providing you with the knowledge on just how effective your materials are.



Mask Material Effectiveness Test

Do you have a face mask design or DIY face mask material you want testing? Or do you want to test the filtration effectiveness of an N95, KN95 or surgical mask you’ve already bought?

Smart Air can provide mask testing services to test the filtration efficiencies of N95, KN95 and surgical masks. We can also test commercial mask materials such as Filti mask material, as well as DIY mask materials in our Smart Air Lab.

Smart Air’s test method – as featured by the BBC – uses professional grade equipment to test mask filtration effectiveness of 0.3 micron particles – the most difficult particle size to capture. These tests have been used by Smart Air to test over 40 DIY mask materials, and over 30 N95 and KN95 masks.


COVID-19 face mask efficiency test certification

Our Turnaround Time Guarantee

We understand that there is an urgent need for testing of masks and materials at this present time. That is why we’re providing a guarantee that we can provide you with a report on your masks within 5 working days of us receiving your samples in our laboratory. This is much, much shorter than the typical 3-6 week time frame typically required for testing masks.


How The Testing Service Works

  1. Contact us to confirm the number and type of items you wish to test. We’ll send you an invoice based on the total quantity.
  2. You’ll then need to send 2 x samples (measuring 10cm x 10cm or larger) of each material to our testing lab in Beijing, China.
  3. Once we’ve received the samples, we test each one 4 times to measure the material effectiveness at filtering 0.3 micron and 1.0 micron particles.
  4. Smart Air provides you with a written report on the test results.

WATCH: Smart Air Chief Engineer Paddy Explain the Test Method Used

COVID-19 Homemade Face Mask Testing Method - How We Tested 30+ Materials For The Ultimate Face Mask

Smart Air Youtube

The testing method follows as closely as possible both European Standard EN 149:2001 methods and China GB2626-2006.

Smart Air mask and material filtration efficiency test certification

Validated Face Mask Testing Report

Upon test completion, Smart Air will provide you with a Face Mask testing report. You can use this as you see fit: for your own quality assurance purposes, for sharing with public to promote your design etc.
Smart Air mask efficiency fit test testing services sample report

Technical Details: Testing Equipment & Standard Details

Our list of testing equipment includes:

  • MetOne GT521 Laser Particle Counter for testing the filtration efficiency of materials
  • Wind tunnel with integrated pitot tube & Testo 510 Digital Manometers for testing breathability of materials
  • PortaCount Fit Test machine for testing the fit factor (leakage) of masks


Air flow is between 85-110L/min, as per the NIOSH-42C FR84 test standard. We do not neutralize particles. We actually use ambient air pollution for our tests. We’ve found that our tests correlate closely with the official test results from 3rd party testing organizations.



DIY face mask material efficiency testing service for particle capture


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Smart Air is a social enterprise that creates simple, no-nonsense air purifiers and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

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