Aaron Collins
@masknerd.bsky.social
Goal is to test and evaluate the best masks out there. Mask up and stay safe!
It's not always easy to explain how we simplified CPC's, but I think this image really makes the case on how we re-invisioned what the optical counter within the CPC could be.
Reducing complexity ➡️ reduced cost ➡️ reduced price.
Optical counters are the heart of high-performing CPCs. By using the latest in manufacturing technology and some ingenuity to simplify and modernize our optical counter, resulting in a 10x reduction in associated manufacturing costs.
Optical counters are the heart of high-performing CPCs. By using the latest in manufacturing technology and some ingenuity to simplify and modernize our optical counter, resulting in a 10x reduction in associated manufacturing costs.
November 11, 2025 at 2:15 AM
It's not always easy to explain how we simplified CPC's, but I think this image really makes the case on how we re-invisioned what the optical counter within the CPC could be.
Reposted by Aaron Collins
Hope everyone enjoyed their Halloween weekend! Here at the OpenAeros offices, everyday is spooky season. 👹🎃💆♂️
November 3, 2025 at 7:22 PM
Hope everyone enjoyed their Halloween weekend! Here at the OpenAeros offices, everyday is spooky season. 👹🎃💆♂️
@mfrumholtz.bsky.social just listened to you on the Wedge Live podcast. There were a few misstatements about air pollution that I think are relevant to the discussion. If you would like to chat about them and connect just let me know.
November 2, 2025 at 4:40 PM
@mfrumholtz.bsky.social just listened to you on the Wedge Live podcast. There were a few misstatements about air pollution that I think are relevant to the discussion. If you would like to chat about them and connect just let me know.
Reposted by Aaron Collins
Thank you for sharing (and registering too)!
If the timezone makes it difficult to attend live, do register so we can let you know as soon as the recording is up.
If the timezone makes it difficult to attend live, do register so we can let you know as soon as the recording is up.
October 29, 2025 at 11:11 PM
Thank you for sharing (and registering too)!
If the timezone makes it difficult to attend live, do register so we can let you know as soon as the recording is up.
If the timezone makes it difficult to attend live, do register so we can let you know as soon as the recording is up.
The @saferairproject.bsky.social is hosting an amazing event on why IAQ matters, IAQ performance standards and policy discussions. If you are in AUS a must attend. Livestream option (hybrid) and recording afterwords.
Just registered myself, should be great!
Register here -->https://bit.ly/ssa-2025
Just registered myself, should be great!
Register here -->https://bit.ly/ssa-2025
October 29, 2025 at 7:37 PM
The @saferairproject.bsky.social is hosting an amazing event on why IAQ matters, IAQ performance standards and policy discussions. If you are in AUS a must attend. Livestream option (hybrid) and recording afterwords.
Just registered myself, should be great!
Register here -->https://bit.ly/ssa-2025
Just registered myself, should be great!
Register here -->https://bit.ly/ssa-2025
Reposted by Aaron Collins
Miss our first OpenRespirator Creative Cohort Live meeting? No worries, we've posted our discussion here! Get to know our cohorts, get read-in on their efforts and progress, and see some early designs. youtu.be/C0Q0ZH6e5AA
OpenRespirator Creative Cohort: Live Meeting 1
YouTube video by OpenAeros
youtu.be
October 20, 2025 at 6:58 PM
Miss our first OpenRespirator Creative Cohort Live meeting? No worries, we've posted our discussion here! Get to know our cohorts, get read-in on their efforts and progress, and see some early designs. youtu.be/C0Q0ZH6e5AA
Reposted by Aaron Collins
This year, we’ve been working with a team of passionate, creative makers to put our open source respirator prototype manufacturing methods to the test. We’re so excited to be introducing you to a couple of them this week. In the meantime, here’s some background on what we’ve been up to: (1/4)
October 6, 2025 at 9:21 PM
This year, we’ve been working with a team of passionate, creative makers to put our open source respirator prototype manufacturing methods to the test. We’re so excited to be introducing you to a couple of them this week. In the meantime, here’s some background on what we’ve been up to: (1/4)
Reposted by Aaron Collins
The momentum for clean indoor air continues to build. I attended the inaugural High-Level Side Event on indoor air quality at the UN General Assembly yesterday. Short remarks by Lidia Morawska @joeallenjoe.bsky.social @isiaq.bsky.social Pres. Kerry Kinney, ASHRAE, WHO, UNEP, many others.
September 24, 2025 at 4:36 PM
The momentum for clean indoor air continues to build. I attended the inaugural High-Level Side Event on indoor air quality at the UN General Assembly yesterday. Short remarks by Lidia Morawska @joeallenjoe.bsky.social @isiaq.bsky.social Pres. Kerry Kinney, ASHRAE, WHO, UNEP, many others.
Reposted by Aaron Collins
Aaron (and our little CPC! 🥹) are taking their places on the floor of the UN! This year is the inaugural General Assembly High Level Side Event on Indoor Air Quality and we're so excited to participate.
The panel will open soon, watch along here: webtv.un.org/en/asset/k1v...
#IndoorAir
The panel will open soon, watch along here: webtv.un.org/en/asset/k1v...
#IndoorAir
September 23, 2025 at 7:40 PM
Aaron (and our little CPC! 🥹) are taking their places on the floor of the UN! This year is the inaugural General Assembly High Level Side Event on Indoor Air Quality and we're so excited to participate.
The panel will open soon, watch along here: webtv.un.org/en/asset/k1v...
#IndoorAir
The panel will open soon, watch along here: webtv.un.org/en/asset/k1v...
#IndoorAir
Glad to bring the "little CPC that could" to the Healthy Indoor Air event at the UN today. The conversation in clean air are moving in the right directions.
Open source hardware will be part of the solutions and proud to show off the OpenCPC as part of tools that can help us measure it.
Open source hardware will be part of the solutions and proud to show off the OpenCPC as part of tools that can help us measure it.
September 23, 2025 at 7:50 PM
Glad to bring the "little CPC that could" to the Healthy Indoor Air event at the UN today. The conversation in clean air are moving in the right directions.
Open source hardware will be part of the solutions and proud to show off the OpenCPC as part of tools that can help us measure it.
Open source hardware will be part of the solutions and proud to show off the OpenCPC as part of tools that can help us measure it.
An early AM flight to NYC to join the Healthy Indoor Air event at the UN tomorrow. This is an important step in the process of helping get clean air legislation. You can watch it live tomorrow between 3:30 - 5:30PM ET.
webtv.un.org/en/asset/k1v...
webtv.un.org/en/asset/k1v...
Healthy Indoor Air: A Global Call to Action
Join global leaders, policymakers, scientists and health experts for Healthy Indoor Air: A Global Call to Action – the inaugural High-Level Side Event on indoor air quality, to take place on the sidel...
webtv.un.org
September 22, 2025 at 9:30 PM
An early AM flight to NYC to join the Healthy Indoor Air event at the UN tomorrow. This is an important step in the process of helping get clean air legislation. You can watch it live tomorrow between 3:30 - 5:30PM ET.
webtv.un.org/en/asset/k1v...
webtv.un.org/en/asset/k1v...
Clean air is not complicated, and costs less than $10 per kid per year to do. This is the 4th year of managing this for my son's school. What happens when he moves to the next school, who will keep doing this for the other kids? We need clean air standards and legislation.
September 22, 2025 at 2:43 PM
Clean air is not complicated, and costs less than $10 per kid per year to do. This is the 4th year of managing this for my son's school. What happens when he moves to the next school, who will keep doing this for the other kids? We need clean air standards and legislation.
Passionate about clean air, environmental justice, and community-based participatory research? The OSLUV Project(501c3 non-profit) is hiring for a Grant Project Manager position for a state funded air quality research effort. You also get to work with me 😂
www.linkedin.com/jobs/view/43...
www.linkedin.com/jobs/view/43...
The OSLUV Project hiring Grant Project Manager in St Paul, MN | LinkedIn
Posted 9:01:10 PM. Organization: The OSLUV Project, Saint Paul, Minnesota.Status: Immediate OpeningDuration: Summer…See this and similar jobs on LinkedIn.
www.linkedin.com
September 15, 2025 at 9:09 PM
Passionate about clean air, environmental justice, and community-based participatory research? The OSLUV Project(501c3 non-profit) is hiring for a Grant Project Manager position for a state funded air quality research effort. You also get to work with me 😂
www.linkedin.com/jobs/view/43...
www.linkedin.com/jobs/view/43...
I couldn't think of a better way to have spent the last 2.5 years of my life. I am incredibly proud of what the team at @openaeros.bsky.social was able to accomplish. There were many who said this was impossible, but we did the impossible and this is just the start. 😁
#cleanairisahumanright
#cleanairisahumanright
We believe that clean air researchers and proponents are doing critical work for our health and future. Too few have had access to the tools to investigate the next frontier of airborne pollutants: ultrafine particles. But we have big news... (1/4)
Introducing the OpenCPC!
YouTube video by OpenAeros
youtu.be
September 15, 2025 at 7:17 PM
I couldn't think of a better way to have spent the last 2.5 years of my life. I am incredibly proud of what the team at @openaeros.bsky.social was able to accomplish. There were many who said this was impossible, but we did the impossible and this is just the start. 😁
#cleanairisahumanright
#cleanairisahumanright
It's crazy to me to see the US Forest Service deny the ever obvious health risks with breathing wildfire smoke. We lack good PPE because there is a limited market, it's a limited market because the Forest Service denies there is a problem. Need a demand pull for PPE.
www.nytimes.com/2025/08/17/u...
www.nytimes.com/2025/08/17/u...
Wildfire Fighters, Unmasked in Toxic Smoke, Are Getting Sick and Dying
www.nytimes.com
August 18, 2025 at 2:26 AM
It's crazy to me to see the US Forest Service deny the ever obvious health risks with breathing wildfire smoke. We lack good PPE because there is a limited market, it's a limited market because the Forest Service denies there is a problem. Need a demand pull for PPE.
www.nytimes.com/2025/08/17/u...
www.nytimes.com/2025/08/17/u...
I made a bold claim this spring, if you recontextualize the 2022 CDC mortality data and look at the root cause of mortality, **the #1 killer in the US stuff you breathe**.
Clean air leads to better health, including lower blood pressure.
www.jacc.org/doi/10.1016/...
Clean air leads to better health, including lower blood pressure.
www.jacc.org/doi/10.1016/...
Effect of HEPA Filtration Air Purifiers on Blood Pressure: A Pragmatic Randomized Crossover Trial
www.jacc.org
August 7, 2025 at 1:30 PM
I made a bold claim this spring, if you recontextualize the 2022 CDC mortality data and look at the root cause of mortality, **the #1 killer in the US stuff you breathe**.
Clean air leads to better health, including lower blood pressure.
www.jacc.org/doi/10.1016/...
Clean air leads to better health, including lower blood pressure.
www.jacc.org/doi/10.1016/...
Poor air quality? Throw on a hyper-breathable mask and do your activities. Still managed over 18 mph highlighting that we have the technology and we should use it!
July 31, 2025 at 1:15 AM
Poor air quality? Throw on a hyper-breathable mask and do your activities. Still managed over 18 mph highlighting that we have the technology and we should use it!
[1/8] It has been awhile since I have read something that has so many mistakes...but the quote from the American Lung Association really takes the cake! @nytimes.com you really need to do better. Let's dig into what they got wrong.
www.nytimes.com/2025/06/30/c...
www.nytimes.com/2025/06/30/c...
Do I Really Need an Air Purifier?
www.nytimes.com
July 8, 2025 at 7:41 PM
[1/8] It has been awhile since I have read something that has so many mistakes...but the quote from the American Lung Association really takes the cake! @nytimes.com you really need to do better. Let's dig into what they got wrong.
www.nytimes.com/2025/06/30/c...
www.nytimes.com/2025/06/30/c...
Yikes! Canadian wildfire smoke in the Twin Cities brings some serious increase in ultrafine counts even on a rainy day.
June 4, 2025 at 2:36 AM
Yikes! Canadian wildfire smoke in the Twin Cities brings some serious increase in ultrafine counts even on a rainy day.
Thanks Boston for the wonderful Nor'Easter weather and some high ultrafine counts. Food and people were good though. 😁
I will still come back.
I will still come back.
May 23, 2025 at 2:52 PM
Thanks Boston for the wonderful Nor'Easter weather and some high ultrafine counts. Food and people were good though. 😁
I will still come back.
I will still come back.
My concert essentials for 2025. Now the question is can you identify the drum and bass legend I went to see?
April 19, 2025 at 1:18 AM
My concert essentials for 2025. Now the question is can you identify the drum and bass legend I went to see?
Reposted by Aaron Collins
First Trump and MAGA fought mask mandates bec they infringed freedom of healthy people. Now Trump mandates that universities ban masks infringing freedom of people with health concerns.
Freedom? Doublespeak?
Glad to see that the rest of the world agreed on a pandemic control treaty today.
Freedom? Doublespeak?
Glad to see that the rest of the world agreed on a pandemic control treaty today.
April 17, 2025 at 3:28 AM
First Trump and MAGA fought mask mandates bec they infringed freedom of healthy people. Now Trump mandates that universities ban masks infringing freedom of people with health concerns.
Freedom? Doublespeak?
Glad to see that the rest of the world agreed on a pandemic control treaty today.
Freedom? Doublespeak?
Glad to see that the rest of the world agreed on a pandemic control treaty today.
More evidence that viruses are bad. If you haven't been following @polybiorf.bsky.social you should. There are no good viruses. While infections for many may be "mild", the life long implications are huge. Want to live longer? Avoid viral infections. Many are airborne!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
A natural experiment on the effect of herpes zoster vaccination on dementia - Nature
Using a natural experiment that avoids common bias concerns, this study finds that the live-attenuated shingles vaccine reduced the probability of a new dementia diagnosis within a follow-up period of...
www.nature.com
April 13, 2025 at 2:37 PM
More evidence that viruses are bad. If you haven't been following @polybiorf.bsky.social you should. There are no good viruses. While infections for many may be "mild", the life long implications are huge. Want to live longer? Avoid viral infections. Many are airborne!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
[1/3] Not surprising to many, but a big deal in terms of further science on airborne transmission of COVID. It's basically a repeat of the famous Wells Riley experiments of the 1960's. Why this is a big deal?
academic.oup.com/ofid/advance...
academic.oup.com/ofid/advance...
Human source SARS-CoV-2 aerosol transmission to remote sentinel hamsters
AbstractBackground. Bioaerosol-mediated transmission of COVID-19 via building ventilation systems has yet to be convincingly demonstrated. We used the Sout
academic.oup.com
April 12, 2025 at 2:47 PM
[1/3] Not surprising to many, but a big deal in terms of further science on airborne transmission of COVID. It's basically a repeat of the famous Wells Riley experiments of the 1960's. Why this is a big deal?
academic.oup.com/ofid/advance...
academic.oup.com/ofid/advance...
I have been so quiet because every day there is some massive impact to OpenAeros. Whether it's crazy tariffs and massive disruptions to supply lines, or the entire gutting of NIOSH. Huge impacts what we have been working on, some weeks are tough. The Little OpenCPC That Could won't be stopped though
April 10, 2025 at 3:49 PM
I have been so quiet because every day there is some massive impact to OpenAeros. Whether it's crazy tariffs and massive disruptions to supply lines, or the entire gutting of NIOSH. Huge impacts what we have been working on, some weeks are tough. The Little OpenCPC That Could won't be stopped though