Profile avatar
cleanairstars.com
Non-profit. Helping businesses better protect their customers from viruses like SARS-CoV-2. Fix your air with the guides cleanairstars.com/steps. Air filter recommendation tool (non-profit) at filters.cleanairstars.com
480 posts 3,504 followers 136 following
Regular Contributor
Active Commenter
Posts 18 Comments 32

Having a bit of a reminisce today. Five years ago an email arrived that changed my life - a request to produce a paper on what we knew about the environmental transmission of covid-19 for the UK SAGE committee. 1/

submitted 56 days ago • 2 comments

submitted 41 days ago • 2 comments

Any recent PhD (2023 or later) aerosol scientists out there interested in studying airborne transmission of respiratory infections? My group is looking for a postdoc to work on human challenge studies with influenza virus at Emory University. Full description at drive.google.com/file/d/1HzJZ...

submitted 102 days ago • 5 comments

🧪Our new paper measuring the bio inactivation by Far UVC is out. We look at ventilation rate, two bacteria (S aureus, P aeruginosa) and some initial tests on distance www.sciencedirect.com/science/arti... 1/

submitted 104 days ago • 2 comments

Our latest paper on the efficacy of germicidal UV radiation just landed at Journal of Hazardous Materials. Thank-you JHM for a smooth peer review process. doi.org/10.1016/j.jh...

submitted 130 days ago • 0 comments

Free webinar “improving air quality in schools. What can we do?” Free to sign up. For teachers, parents, students, and anyone interested in improving the classroom. events.teams.microsoft.com/event/7d54c6...

submitted 115 days ago • 0 comments

For all #ventilation fans, the Future Urban Ventilation Network @breathingcity.bsky.social has just joined Bluesky. Follow for events and updates around ventilation and IAQ from the network.

submitted 111 days ago • 0 comments

We’re launching our Invisible Inclusion program! We’re seeking founding partners to co-design this initiative that helps businesses become safer, healthier, and more inclusive for employees and customers with chronic health conditions. Learn more: 🎥 youtu.be/3nrpPM7OoBk

submitted 109 days ago • 3 comments

Thread for those new to BlueSky. First of all, welcome. It feels like a safer space, doesn’t it? But also perhaps a bit disorienting initially? Here’s some tips for getting your bearings.

submitted 201 days ago • 691 comments

No, SARS-CoV-2 isn’t a little bit airborne. It’s not “situationally” airborne. It’s an AIRBORNE VIRUS, spreads via the air. I’m granting an amnesty on people who said (5y ago) that it wasn’t. I won’t say I told you so if you finally acknowledge the evidence. Let’s just get this right and move on.

submitted 136 days ago • 23 comments

Latest from Vic health dept SM: Credit for acknowledging airborne transmission & educating about the importance of ventilation 👍 Nb: given they acknowledge transmission is airborne, advice to wear a respirator when ventilation is not optimal (eg crowded public indoor spaces) would’ve been helpful

submitted 140 days ago • 1 comment

Great paper on the theory of why not-HEPA is actually better. It makes two assumptions that I think need to be updated. My guess is with electret media, 90% is probably target 1. Doesn't consider electrostatic filter media 2. That blower efficiency curves are fixed, but still good first order est.

submitted 179 days ago • 1 comment

[1/2] All that matters is CADR! Ignore things super-hyper-mega HEPA. Often times a filter that only provides 70-80% actually provides more clean air than a filter that is 99.97%(HEPA). I used a 16x20 3M filter taped to a Taotronic AP-003(with no internal HEPA installed) and got a 30% boost in CADR.

submitted 183 days ago • 16 comments

This paper from 20 years ago has the math and theory for an greatly improved air cleaner design at ~80% filtration that has turned out to be correct. The "must be HEPA 99.97% filtration" is hard to overcome.

submitted 179 days ago • 4 comments

Steve Rudnick described the theory behind this phenomenon in a paper in Aerosol Science and Technology in 2004. For submicron particles, he estimated that 82% efficiency was optimal. www.tandfonline.com/doi/abs/10.1...

submitted 179 days ago • 9 comments

When it comes to the airborne transmission of viruses, how fast the air is physically removed from the room is important. In my latest explainer video, I discuss how you can measure how well your home is ventilated, and what you can do improve it. youtu.be/dMTOLgIc8-I #ventilation

submitted 186 days ago • 18 comments

The report released today by @saferairproject.bsky.social makes a strong case for safer shared air as an accessibility and inclusion issue. www.saferairproject.com/safer-shared...

submitted 194 days ago • 10 comments

Starts in 10 mins

submitted 194 days ago • 0 comments