KandyMask - Face Mask with Filter Test Results
We have been researching filtration for face masks and air purifiers since 2008. One thing we have learned over the years is how to develop great filtration products. Being open and transparent about testing and performance is at the core of what we do.
We know how important it is for you to buy a face mask that offers real respiratory protection. In our world, performance needs to be backed by data and not fancy marketing jargon.
Nelson Labs performed these tests and is the world leader in microbiological and analytical laboratory tests. They also perform the pre-qualification testing for NIOSH who certifies N95 masks. They are the gold standard when it comes to medical and pharmaceutical testing.
Below is a summary of our face mask filter test results.
KANDYMASK - SUMMARY OF FACE MASK FILTER TEST RESULTS
- Viral Filtration Efficiency (VFE): 99.80% ( view test report) FDA Accredited Lab
- Bacterial Filtration Efficiency (BFE): 99.76% ( view test report) FDA Accredited Lab
- Sodium Chloride Particle Filtration Efficiency (NaCl - PFE) @ 0.07 to 0.3 microns: 97.14% ( view test report) FDA Accredited Lab
- Particle Filtration Efficiency (PFE) @ 0.3 micron: 99.3% (view test report) CNCA Geaccrediteerd Lab
VIRAL FILTRATION EFFICIENCY
This test is to determine how well a face mask filters virus-containing droplets. A suspension of the bacteriophage ΦX174 was aerosolized using a nebulizer and delivered into a KandyMask face mask to perform the evaluation. The entire surface of our face mask was used to determine the final result.
For example, if masks score a Viral Filtration Efficiency (VFE) score of 95%. It will block 95% of droplets that contain viruses. The higher the percentage the better that a mask is at blocking virus-containing droplets.
BACTERIAL FILTRATION EFFICIENCY
This test is to determine how well a face mask filters bacteria-containing droplets. A suspension of Staphylococcus aureus was aerosolized using a nebulizer and delivered into a KandyMask face mask to determine the final result. The entire surface of our face mask was used to determine the effectiveness of the face mask filter.
The same concept applies to the Viral Filtration Efficiency Test. The higher the Bacterial Filtration Efficiency (BFE) score the better the barrier against droplets that carry bacteria.
SODIUM CHLORIDE PARTICLE FILTRATION EFFICIENCY
This test is primarily used by medical face masks seeking the N95 status. The N95 status only applies to disposable medical masks and not reusable ones. There is no better test to take then to see if you would qualify as an N95 respirator. This test is performed to determine the particle penetration rate of the filters. Sodium Chloride (NaCI) is generated and pushed through the entirety of the face mask. Sodium Chloride forms a cloud of microscopic particles of salt. This allows scientists to replicate different size particles you would find in air pollution.
The Nelson Lab scientist used particle size between 0.075 microns and 0.3 microns. The particle medium size was around 0.26 micron. This size is chosen because it is the most penetrating and difficult size for a face mask filter to catch. This is the reason why N95 masks are required to subject themselves to this test and not another type of test for large particle size.