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Formaldehyde
formaldehyde

Formaldehyde is a colorless, flammable gas that can be carcinogenic to humans, and is a common additive to building materials and household products. Formaldehyde is also formed in the environment upon oxidation of a variety of hydrocarbons, including natural gas (methane). Symptoms of exposure to low concentrations of formaldehyde may include headache, nausea, throat and skin irritation, and exacerbated chemical sensitivity. For a quick summary of formaldehyde exposure basics, please see the [ASTDR’s ToxFAQs for Formaldehyde](https://www.atsdr.cdc.gov/toxfaqs/TF.asp?id=219&tid=39). For much more in-depth information, please see the [ASTDR’s Toxicological Profile for Formaldehyde](https://www.atsdr.cdc.gov/toxprofiles/tp.asp?id=220&tid=39). In Public Lab, we’ve been exploring low-cost methods for monitoring airborne concentrations of formaldehyde and low-cost methods for mitigating exposure to it. ### Formaldehyde projects Projects related to formaldehyde monitoring and exposure mitigation can be found on the following wikis. Low-cost monitoring of airborne formaldehyde using colorimetric tubes: https://publiclab.org/wiki/formaldehyde-test-kit Low-cost monitoring of airborne formaldehyde using a passive badge sampler and smartphone app: https://publiclab.org/wiki/smart-form Personal exposure to formaldehyde (and information about exposure): https://publiclab.org/wiki/formaldehyde-exposure Low-cost remediation or airborne formaldehyde: https://publiclab.org/wiki/diy-indoor-air-quality-remediation-kit ### Current formaldehyde research in Public Lab Follow active development on [the tag 'formaldehyde.'](/tag/formaldehyde) You can also [subscribe](/subscriptions) to to the formaldehyde tag to get email updates when a research note, wiki, or question gets tagged as related to formaldehyde. **** ### Questions in Public Lab related to formaldehyde [questions:formaldehyde] **** ### Activities to try in Public Lab related to formaldehyde [activities:formaldehyde] **** ...


Author Comment Last activity Moderation
mathew "I broke the tip off the tube with a pair of pliers. I do need a proper tip breaker-- my method left a good mess. " | Read more » about 9 years ago
mathew "Can i get a 250ml pipette? My choice of graduated cylinder volume was based on a desire to make the time period I measured long enough that my reac..." | Read more » about 9 years ago
mathew "the pump's output seems fairly consistent without a warm-up. I wanted to see if the setup retained its configuration from yesterday, so I ran thre..." | Read more » about 9 years ago
DavidMack "Looks like a nice setup! For bubbles, the cheap ready made option would be any liquid bubble--the kid's toy to blow bubbles. @danbeavers I think ..." | Read more » about 9 years ago
danbeavers "Looks like you had problems breaking the tip of the tube. What process did you use? I am really curious to find out how much flow variation there..." | Read more » about 9 years ago
danbeavers "After further discussions with my mechanical engineer friend: If you use the manometer with tees and an orifice between them the orifice should be..." | Read more » about 9 years ago
danbeavers "Another observation: It would be good to have a check list for the measurement. For example: Verify that the humidity is above ?? and below ??..." | Read more » about 9 years ago
danbeavers "@Mathew I just added a note from a mechanical engineer friend about orifice size to the http://publiclab.org/notes/nshapiro/11-03-2014/diy-formald..." | Read more » about 9 years ago
danbeavers "@Mathew The following is from a mechanical engineer friend of mine: Assuming you could pull a reasonably good vacuum on the orifice, you could ge..." | Read more » about 9 years ago
mathew "@nshapiro- 5lbs 12oz, so for mailing purposes 6lbs. Unless the blue plastic weighs 12 oz I'm tempted to keep it-- the oval cutout in the top panel..." | Read more » about 9 years ago
danbeavers "To be a little more precise about "(potentially) remove the most expensive component, the flow control valve." I have not priced them but an aquar..." | Read more » about 9 years ago
nshapiro "This looks great! What does it weigh? I wonder if loosing the blue plastic shell on the pump would lighten the load in any more cost-efficient way. " | Read more » about 9 years ago
warren "Can you test filling one out and taping a tube to it, and photographing it in landscape? For the video. Maybe on a carpeted floor or a wood table, ..." | Read more » about 9 years ago
nshapiro "I think the sensor is at the back so we might want it to be popped out of the case so that we don't just pick up the heat from the pump. " | Read more » about 9 years ago
nshapiro "The round meter appears to be inaccurate. here are some test photos: " | Read more » about 9 years ago
nshapiro "This looks great! Thanks! The thermometers arrived today. Will bring them in and photograph them tomorrow. " | Read more » about 9 years ago
warren "Hi, I wasn't able to edit the tube graphic very well on my laptop but here are some of the other changes; I hope it's good enough for your immediat..." | Read more » about 9 years ago
warren "I see the most contrast in color in the first two images. I'll see about a new version after the staff call in 20 mins. " | Read more » about 9 years ago
nshapiro "Maybe I was wrong! The glare seems to be worse on the back background. Which looks best to y'all? only the outer two mm or so is transparent so ma..." | Read more » about 9 years ago
nshapiro "Here are the test photos on an old tube. Its not a perfect test because the rest of the tube may not be the same substance as the rest of the tube ..." | Read more » about 9 years ago
warren "I'm not sure I can tackle the complete redesign on a smaller card just yet, as I am just on my laptop this week. But I can change the text. Nick, ..." | Read more » about 9 years ago
danbeavers "Nick: I am not disputing your background observation but why do you think the vendor says a light background and compare it to an unused tube? " | Read more » about 9 years ago
nshapiro "Small edits to the card: we can delete the "within 2 degrees" helper text. we can reduce size (thus increasing detail of tube) of the card zip c..." | Read more » about 9 years ago
danbeavers "Mathew: That sounds like a mechanical engineer (which I am not) question. I SUSPECT that it will be the sum of the restrictions because of the lo..." | Read more » about 9 years ago