4 ms·
I'm a bit confused by the listed results. For example one mask is listed a KN95 and has a fail although filtering is stated as 99.87%. Isn't a KN95 specifically
by sschueller 5y ago
I'm a bit confused by the listed results. For example one mask is listed a KN95 and has a fail although filtering is stated as 99.87%. Isn't a KN95 specifically rated to hold at least 95% of particles of a certain size? Anything above is irrelevant as it holds up to the minimum requirement? Or is it 99.87% of 95% which I would still consider within margins of manufacturing variations.
A KN95 that filtered only 75% is something I would be concerned of. Additionally the fit in someones face can turn a good N99 mask into a useless mask which is also an important factor.
- buescher 5y agoHow they rate masks as passing and failing is not transparent. They indicate they rate the masks on construction and smell but do not give the scores.
- lloydarmbrust 5y agoThanks for this... I tried to answer this here but LMK if I can be more clear: https://news.ycombinator.com/item?id=29878971#29882192 https://news.ycombinator.com/item?id=29878971#29882192
- curling_grad 5y agoThe website says: > Subjective Scoring: Construction > Ear loop strength, build quality, and comfort. This test is somewhat subjective, which is why we don’t include in pass/fail analysis. > Smell is not considered as part of pass/fail analysis.