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Why did this mask fail?
Country of Origin
It failed because the KN95 standard requires that the mask have the manufacturer name and the technical standard that the mask is claiming, typically either “GB 2626-2019” or GB-2626-2006" written across the front of the mask.
I don’t understand the testing results. Why did this mask fail? Please clarify.
Purism – Protective KN95 Face Mask fail even it passed the filtration and breathability tests？