Indoor Air Quality
indoor-air-quality

Much of our lives is spent indoors where we live, work, and play. What is in the air we breathe indoors affects our health and quality of life. Some common pollutants that could be present in indoor air include carbon monoxide, radon, mold, asbestos, formaldehyde, and other volatile organic compounds (VOCs). A number of projects on Public Lab have explored indoor air quality, monitoring and remediation. Check out the materials below, follow the tag indoor-air-quality and add your materials to this topic. ### Questions [questions:indoor-air-quality] ### Activities [activities:indoor-air-quality] ### Research notes [notes:indoor-air-quality!question:indoor-air-quality] ### Wikis All wiki pages relating to air quality: [wikis:indoor-air-quality] ### Regulations on indoor air quality #### Federal regulations Many of us spend a large portion of our time indoors, and yet indoor air quality remains largely unregulated at the federal level in the US [[1](https://www.epa.gov/regulatory-information-topic/regulatory-information-topic-air#indoorair)]. For office buildings and other workplaces, the Occupational Safety and Health Administration sets rules on ventilation and some air pollutants [[2](https://www.osha.gov/SLTC/indoorairquality/)], but there are no federal regulatory standards on indoor air quality for these spaces. In addition, the air we breathe inside our schools [[3](https://www.epa.gov/iaq-schools/are-schools-required-follow-epas-iaq-tools-schools-guidance)], homes, and apartment buildings also lacks federal air quality standards, leaving individual states to set their own rules. Sources: 1. [https://www.epa.gov/regulatory-information-topic/regulatory-information-topic-air#indoorair](https://www.epa.gov/regulatory-information-topic/regulatory-information-topic-air#indoorair) 2. [https://www.osha.gov/SLTC/indoorairquality/ ](https://www.osha.gov/SLTC/indoorairquality/) 3. [https://www.epa.gov/iaq-schools/are-schools-required-follow-epas-iaq-tools-schools-guidance](https://www.epa.gov/iaq-schools/are-schools-required-follow-epas-iaq-tools-schools-guidance) #### Local, tribal, or state regulations The Environmental Law Institute maintains a searchable database of indoor air quality laws in individual US states here: [https://www.eli.org/buildings/database-state-indoor-air-quality-laws](https://www.eli.org/buildings/database-state-indoor-air-quality-laws) The US Environmental Protection Agency provides links to state, tribal, and regional indoor air quality programs here: [https://www.epa.gov/indoor-air-quality-iaq/epa-regional-office-and-state-indoor-air-quality-information ](https://www.epa.gov/indoor-air-quality-iaq/epa-regional-office-and-state-indoor-air-quality-information)...


Author Comment Last activity Moderation
danbeavers "Then my other concern is how does the used tube flow rate change over several days or weeks since there are chemical reactions occurring that might..." | Read more » over 9 years ago
mathew "this setup will flow 9 liters in 30 minutes, +/- variation in the tubes. I worked to isolate that variation to the tubes, and @gretchengehrke and ..." | Read more » over 9 years ago
danbeavers "It appears that you believe this setup will flow 9 liters in 30 minutes. Perhaps I missed the data but I thought there was significant variation b..." | Read more » over 9 years ago
mathew "@DavidMack Good catch! My notebook measures test 2 at 38.78, right next to 39.78 for the next test! I edited the note. thanks! You're right abou..." | Read more » over 9 years ago
DavidMack "@mathew Great work and the title is appropriate! Sometimes when I’d compare instruments head to head it would be referred to a “shoot out”—an inst..." | Read more » over 9 years ago
warren "Yeah Dan, I later realized that a draw valve at the top would be better than a push valve at the bottom, and I think it'd mean the gasket would be ..." | Read more » over 9 years ago
danbeavers "@warren How do you start the timer? I don't see a sensor for the start, only the end. Another set of electrodes appear necessary. Will that set ..." | Read more » over 9 years ago
warren "Wow, very cool. I'm thinking of what kinds of vessels could be easily adapted to a DIY version of the sort of spring-loaded bubble making frame in ..." | Read more » over 9 years ago
mathew "ran some tests on the different Kitagawa tubes that have been used. I put the end into the drilled-out brass tube I've been using to break them, a..." | Read more » over 9 years ago
mathew "I bought and tried a 50ml pipette and made a dropout jar. The jar kind of works-- some condensation still seems to get through, but never bubble..." | Read more » over 9 years ago
danbeavers "It appears you need some more ventilation or perhaps start using the remediation process. http://publiclab.org/notes/nshapiro/10-20-2014/diy-indoo..." | Read more » over 9 years ago
DavidMack "@mathew I believe you have the VWR series FR2000 rotameter, which the accuracy is specified as +/- 5% of full scale, so that's +/- 0.05 lpm. see h..." | Read more » over 9 years ago
mathew "Just repeated this test today at 26 degrees, and temperature corrected we got 25ppb. So good news: consistency. Bad news: consistently hazardous c..." | Read more » over 9 years ago
danbeavers "@mathew What do you mean by " small control orifice into a brass rod and put it at the intake"? I hope you are thinking manometer . . . What I s..." | Read more » over 9 years ago
nshapiro "@mathew were the two tubes that you are comparing opened by different means? perhaps if we can just standardize the tip breaking better we wouldn't..." | Read more » over 9 years ago
mathew "ok, looking at a photographic record of the flow rate between the two rotameter measurements it does seem like the change in flow is noticeable. F..." | Read more » over 9 years ago
mathew "@danbeavers I couldn't find that little heart. It may have been lost when the box arrived. @davidmack I ran the VWN rotameter with the valve all t..." | Read more » over 9 years ago
danbeavers " @mathew That heart shaped object is the abrasive chip. When @nshapiro and I did my first measurement Nick said the scoring chip should be in the..." | Read more » over 9 years ago
DavidMack "I think the rotameter is going to be easier to use than the critical orifice/differential pressure method, especially with a fluid manometer. You ..." | Read more » over 9 years ago
mathew "rotameter on the table reading .25L/m rotameter on a block of foam for vibration isolation, reading .3L/m " | Read more » over 9 years ago
mathew "hmmm.... the level of the rotameter goes and stays at .3L/m when I hold it down to the table at a level point. the vibration of the pump and level..." | Read more » over 9 years ago
mathew "I ran a test in our kit packing area and found 26ppb of formaldehyde. while running the test, a Rotameter from VWR arrived in the mail. I hooked ..." | Read more » over 9 years ago
danbeavers "@davidmack I don't know how much vacuum a 5lpm pump will produce but it needs to generate "below 7psia" to get sonic or choked flow. An aquarium ..." | Read more » over 9 years ago
mathew "I ran a formaldehyde test over by our shipping station, now that the flow on our lending kit is calibrated. We got 26ppb, or about 3.5x the chroni..." | Read more » over 9 years ago