KF94, FFP2, KN95 and N95 Tri-folds! Which was 100x Better According to Science? скачать в хорошем качестве

KF94, FFP2, KN95 and N95 Tri-folds! Which was 100x Better According to Science?

Some call them “fish masks” or “boat style” masks, but whatever you call them, tri-fold masks are some of the most comfortable masks around that can also provide N95 level protection - if they fit you well. I used a PortaCount mask fit testing machine to test a variety of trifolds, from uncertified AirQueen Nanos, to KF94s, a KN95, an FFP2 and N95s. One was a 100x better than others. Really. 100x. Fit matters. 02:22 Flex Fold 8862 KN95 03:26 Flex Fold 8862 KN95 with Hook 04:31 Flex Fold 8862 KN95 with Fix the Mask 06:28 BNX F95B 08:04 BNX F95B N95 with 3M Aura Nose Wire 09:38 AirQueen Nano 11:21 AirQueen Nano with Fix the Mask 11:55 AirQueen Breeze FFP2 12:59 AirQueen Breeze with Hook 13:40 AirQueen Breeze with Fix the Mask 14:27 AirQueen Breeze – Hacked 15:39 AirQueen Breeze – Hacked + Hook 16:07 AirQueen Breeze – Hacked + Hook + Fix the Mask 16:56 LG Airwasher KF94 17:57 BOTN Large KF94 19:34 3M Aura 9205+ with Hacked Earloops 20:50 3M Aura 9205+ The 3M Aura earloop hack is not 3M or NIOSH approved. It can't be used for occupational use because hacking a mask negates its NIOSH certification. You should fit test it before carefully deciding if it works for you or not. Fit Factor Fit factor is the the concentration of particles outside the mask divided by the number inside the mask. So if there were 100 particles outside and 10 inside, 100 divided by 10 is 10, so the air inside the mask is 10 times cleaner and the fit factor is 10. If there are 100 particles outside and only 1 inside, the mask would be a 100x cleaner inside, for a fit factor of 100. Home Fit Testing You can do mask fit testing at home by checking your mask with an aerosol that you can taste if your mask leaks. You can do a professional fit test by purchasing a complete Alegro, MSA, Moldex or 3M fit test kit with a hood, two nebulizers and either saccharine or Bitrex solutions. I got one of these aerosol fit test set ups for $50 on eBay, but it took some looking before finding one at a discount. A discounted pro fit test set up cost me less than some people pay just to get a nebulizer to make a home kit. This is a long instructional video by someone who has helped write the standards for doing fit testing with these kits, Dr. Roy McKay:    • Respirator Fit Testing Using Sweet and/or ...   The professional version of fit testing shown in the Dr. McKay video is approved by OSHA. Dr. McKay's video can help you learn how to do the pro version correctly for reliable, repeatable results. For a less accurate version that nonetheless can still help you identify some masks that leak there are home brew versions of mask fit testing. You can do a version at home using a single nebulizer and a commercial saccharine or Bitrex fit test solution under a large plastic bag - using commercial fit testing solution. Be aware of the possible suffocation hazard of using a bag over your head - the commercial hoods are stiff have a lower suffocation hazard. *You should not cover your head with a plastic bag without another person to supervise and help you keep safe.* You can dilute some of the commercial saccharine Fit Testing solution 1 part fit testing solution to 100 parts water to create Threshold check solution to make sure you can taste it without a mask. Then you use the full strength solution for when you wear the mask. (This dilution ratio only applies to saccharin Fit Test solution. Bitrex is different.) https://www.zoro.com/3m-fit-testing-s... u/philipn Has done improvised fit testing with sweet n low and a nebulizer which I have not tried.    • How to do a DIY mask fit test   Sweet n Low is mostly filler, so you can't make the solution as strong as commercial fit test solution. The stronger concentrations help you find smaller leaks. But any fit testing is better than none, especially if you don't assume the fit tested mask is perfect nor that it makes you invulnerable. Keep in mind that only the professional method of using 2 solutions as approved by OSHA and shown in the Dr. McKay video will confirm fit. The simpler home versions will help you identify masks that leak, but can't guarantee that masks that pass that simple testing are completely safe.