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
liz "Hi @kinasmith this is extremely helpful! I have some additional information to report: the HCHO meter has already been sent to the research site in..." | Read more » about 6 years ago
kinasmith "sorry, I wasn't very clear in that previous message. I'll try to clarify. You'll need an Arduino in the middle between the sensor and the computer...." | Read more » about 6 years ago
liz "Can someone (@kinasmith ?) do a quick screen recording with CoolTerm open while talking about what menus and settings are needed to actually make ..." | Read more » about 6 years ago
liz "Here's what the interface looks like: " | Read more » about 6 years ago
liz "^^ interesting! A whole new angle on this problem. I think I would actually do this first to see the results coming out of the sensor, whether or n..." | Read more » about 6 years ago
liz "ok thanks @cfastie and @kinasmith, i think i get it now! " | Read more » about 6 years ago
yamanoorsai "In fact, if the analog output is linear, I would not need the meter " | Read more » about 6 years ago
yamanoorsai "Hello, I would be glad to help as long as I get to share my work under an open license with everyone. How does one gain access to the HCHO meter li..." | Read more » about 6 years ago
kinasmith "so, how long will the sensor need to collect data for? If there is reliable power, and it's inside of a house, and it isn't running for weeks on en..." | Read more » about 6 years ago
kinasmith "I've read through the datasheet/manual for this sensor. Their use of audio connectors for signal and power connections is pretty questionable, but ..." | Read more » about 6 years ago
cfastie "Liz, I don't know the specs of the 1/4" phone plug, but it needs only two contacts, the tip and one ring along the shaft. I'm not sure which types ..." | Read more » about 6 years ago
warren "Thanks to all the software contributors who helped fix that -- @siaw23 @sagarpreet " | Read more » about 6 years ago
warren "OK - links and uploads now working again on the site! " | Read more » about 6 years ago
liz "wow awesome! @cfastie sorry to ask more but can you draw a picture on paper of what you expect these cables to look like? "A 1/4" stereo/phone plug..." | Read more » about 6 years ago
zengirl2 "@cfastie @warren ah, ok that makes sense now. " | Read more » about 6 years ago
warren "https://gist.github.com/jywarren/599b76ef9cdecdce764a7348f728ae31 " | Read more » about 6 years ago
warren "We're still struggling with a comment formatting bug -- apologies -- over in https://github.com/publiclab/plots2/pull/2605 -- here it is for the ti..." | Read more » about 6 years ago
cfastie "New answer below where I could attach a file. " | Read more » about 6 years ago
cfastie "A 1/4" stereo/phone plug connects to the HCHO sensor and two wires from that cable connect to the Arduino (tip of plug to A3, ring to GND). Below (..." | Read more » about 6 years ago
zengirl2 "@liz I can meet with @nshapiro with some Arduinos, but I think my question is where do you attach alligator clips or wires for testing this beast? " | Read more » about 6 years ago
liz "Perhaps @Zengirl2 can go over the Nick's house and bring an Arduino? (They are both in Philly) and for good measure we can open up a video link wit..." | Read more » about 6 years ago
cfastie "The first step might be to arrange for the co-location of the HCHO sensor, an Arduino, and somebody casually familiar with Arduino. Has the proper ..." | Read more » about 6 years ago
liz "Hi @cfastie -- thank you so much for asking these questions. Here's what i know -- Nick has to go to Georgia with a working solution in 2 weeks...." | Read more » about 6 years ago
cfastie "Kina, Thanks for the great information. Liz, It might help to know more about this project. What is the time frame for deployment? What has been tr..." | Read more » about 6 years ago