🧵 Write up of Laianzhi KN95 (*LAZ/KN99) T99+ HYX02. Disclaimers: Not a review but personal observations after some exploration. I do not have access to a PortaCount. Not affiliated with Laianzhi. Photos are from my phone camera. 1/14

RT @SmartairUk: Kids breathe 2–3 times more air per kg than adults. Spending 30+ hours a week in poorly ventilated classrooms means double….

RT @safe_breathe: If you're interested in getting an Aranet4 Home, now is a good time as the monitor is currently 30% off, and you can save….

RT @Engineer_Wong: @NukitToBeSure Simply having an air purifier with the correct CADR is insufficient. It requires adequate time to cycle t….

RT @NukitToBeSure: @Engineer_Wong Yep, filters take time to work, so can't do much for near field. I saw this and liked it- better than m….

RT @NukitToBeSure: More on air purifier placement from our friends at @SmartAirFilters . TLDR; CADR and noise volume over room position, do….

RT @SmartairUk: 📣LEASE or BUY air purifiers for your school!. ✨ Schools can now get clean air in every classroom with our new monthly subsc….

RT @RackMask: Butterflies are coming

RT @MariaMGillespie: This is how I make a seal cut at the nose on my kid's Zimi mask so that it fits better around her nose bridge, elimina….

RT @NukitToBeSure: Still waiting for the community outrage over deliberately targeting Queer disabled people with fraudulent products that….

RT @Biff234523: For everyone worried about this, try not to panic too much. It’s a big issue that needs to be addressed, but that’s fine,….

RT @Biff234523: Amazing new study out for Novavax: . Effectiveness of NVX-CoV2373 and BNT162b2 COVID-19 Vaccination in South Korean Adolesc….

RT @SalamonSMD: Beyond thrilled and counting down the days to the publication of our "#AirborneAIDS" paper!. Spoilers:.* pandemics don’t en….

RT @we_are_ssd: Update: this explains why some are seeing the prescription requirements. Things are changing rapidly. There will be an op….

RT @ghhughes: 3M updated its list of lot codes used on known counterfeit N95s - counterfeited models include 8210, 8210Plus, 9205+ and 9210….

RT @CyFi10: CVS is holding off in states where it believes its pharmacists need a C.D.C. endorsement. Those states are Arizona, Colorado,….

RT @nickelpin: I don't ask my doctor to comment on the tensile strength of the thread in parachutes or the structural engineering of the Si….

RT @acrossthemersey: Ukraine has reinstated mandatory mask wearing for staff and visitors in all medical institutions, and the Ministry of….

RT @we_are_ssd: RFK has restricted access to COVID vaccines, which is incredibly harmful. Everyone is at risk for severe COVID. But if you….

RT @NoHealthNoFun: Testing invites accountability. Accountability if you infect someone who suffers serious sequelae, accountability if in….

RT @zhouliang_mask: Mask fit varies from person to person, but Chinese and European protective mask standards have basic numerical requirem….