![]() The one thing I'd note about my particle counter is that it really only reads out in 2 significant figures, and it can't tell what size the ambient particles that it is testing are. One of many bad mask purchases I've made where no fancy fit testing was needed to know that the mask was such a bad fit it would be useless. I bought some Soom masks from Soomlab - darn those things were small. I'd be happy to try them, but my nose might not be representative :-) I'd be interested if anyone else has done similar testing and can share their results for some KF-94s vs. However, I do use a mask lanyard that doubles as an ear saver which gives me a bit better fit without being uncomfortable on my ears. I haven't noticed any streams of air like you mention. (That style is a bit too big for me so I settled on the Bluna FaceFit). I must admit that the fit factor results you got for the LG Airwasher were a bit concerning. I have been wearing KF-94s primarily so the nose wire seems to be pretty decent while the nose wire on the Aura seems like overkill to me.Īlthough that may be because I have simply gotten used to KF-94s and haven't gotten used to N-95s yet. The shorter top panel and the lower nose wire pocket of the BNX - which were deficits on your face - are actually an advantage on mine. Seeing the various masks on your face helped cement the conclusion I had tentatively drawn that the Aura is just too big for my face. Thanks for an informative (and entertaining) video. My testing is similar to that of Aaron Collins, but without his expertise or the lab grade particle counter.ģM Aura 9205+ - Shipped and Sold by AmazonīNX F95B – Shipped and Sold by BNX AccuMed* I'm also not doing the official 4 stage OHSA fit test. Because of that fit factor can be below 100 and still be within minimum expectations for a perfectly fitted N95 mask using the N100 test. I'm using an N100 style fit test of all ambient particles not the officially designated OSHA N95 protocol that counts only non-penetrating particles so that only leakage around the mask is measured – some filter penetration of ambient particles is expected. Interior Depth – 8.5mm (Working part of the mask, not counting tabs.) Interior Depth – 9.5mm (Working part of the mask, not counting tabs.) (Measured by opening the tri-fold mask fully, then folding in half so it looks like a bi-fold.) The interior depth of the working portion of the mask is also a bit shorter. ![]() The top panel is shorter, and the nose wire pocket slightly lower. ![]() It is not as big as the 3M, in spite of the front panels being essentially identical in size. ![]() The measurements seem similar to the 3M Aura 9205+, but the BNX F95B really is, as advertised, a small/medium mask. To get some additional perspective of where the BNX F95Bs fit in the pantheon of respirator-grade tri-fold masks, I also included a test of the LG Airwasher, a mask I had to ditch because of the leaks I could clearly feel at my nose bridge. I tested using a TSI particle counter mask fit tester - kind of like if you ordered Aaron Collins on Wish dot com. Black masks are fun, but KF94s don't fit me well enough to be protective. I just got my BNX F95B black N95 masks from Amazon and I really, really want them to be good enough to wear instead of my 3M Auras.
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