# filtration filtration

Author Comment Last activity Moderation
ritewayhtowing "i Love this thought.. Motorcycle Tow Truck Service " | Read more » over 2 years ago
asnow "@Zengirl2 Hi Leslie! Do you have a parts list you can share for your version? We want to put one together here in Providence! @Bronwen @jiteovien " | Read more » over 4 years ago
Ag8n "Strike 2. The place I was referred to intends to start class 100 k testing in the near future.... But not now. " | Read more » over 4 years ago
Ag8n "The best way to test a HEPA filter is with an air particle counter. Thought I could borrow one from a local university. They do not have one. It..." | Read more » over 4 years ago
Ag8n "I don't know if you have a protocol in mind, but let me know exactly what you want. I also need to do some digging. May be able to find a particl..." | Read more » almost 5 years ago
warren "@Ag8n that sounds really good -- do you have a box fan and want to try it? I'm also interested in whether we could compare a clean filter to one us..." | Read more » almost 5 years ago
Ag8n "How about using foam pipe insulation and adhesive for the frame? Then hold the filters in place with bungee cords? Maybe as a cost savings? " | Read more » almost 5 years ago
Ag8n "Something similar has been used as an improvised food dehydrator for years. See some of the old episodes of Good Eats. Wonder if the dehydrator w..." | Read more » almost 5 years ago
zengirl2 "@warren Yes! Can't do until later this week, but we should definitely expand. " | Read more » almost 5 years ago
warren "@zengirl2 - heard you were talking about doing this -- shall we collect up some info on a new wiki page using a method template? " | Read more » almost 5 years ago
warren "Ah cool, i found it! When you are done with the experiment, simply unlink the two hoses and put the output from the pump into a bottle of bleach. ..." | Read more » about 5 years ago
warren "I wonder if @shanlter knows about absorbing #h2s #hydrogen-sulfide -- and also I saw @jsummers had a system for eliminating h2s from a test setup -..." | Read more » about 5 years ago
jpkearns "Our systems are simpler, lower in cost, and made from common local materials. Please get in touch if you have questions - www.aqsolutions.org " | Read more » almost 7 years ago
eustatic "very cool. good question regaring the water pressure control, I've often wondered that myself. " | Read more » almost 7 years ago
liz "FYI Public Lab, additional informal conversation on this is also happening on the WeChat app -- let us know if you want to join there " | Read more » almost 7 years ago
DavidMack "I think you just need a bigger filter or a smaller fan and it will work fine. I don't see much advantage in making an adapter plate to make these t..." | Read more » over 7 years ago
danbeavers "That is fairly cheap and apparently readily available. I would think that 3D printing the corner transitions would be the best thing. It would e..." | Read more » over 7 years ago
Melissa "@danbeavers the HEPA filter I found came in a pack of two for about $45 online at Walmart. So I guess about$20 each. Pretty inexpensive, and it is..." | Read more » over 7 years ago
Melissa "thank you @nshapiro " | Read more » over 7 years ago
warren "@chrisbartley has posted about the Speck on this site. Hi Chris! Melissa's developing a DIY filter that might interest you. " | Read more » over 7 years ago
danbeavers "What is the source for the HEPA filter? Isn't that an expensive item? " | Read more » over 7 years ago
nshapiro "Maybe try Bea, she does community outreach there https://github.com/beadias or try info@specksensor.com " | Read more » over 7 years ago
Melissa "@nshapiro No we have not been in touch with them. Do you have anyone there in mind that I could contact? I would love to see their results. " | Read more » over 7 years ago
nshapiro "The create lab at CMU has been talking about this form of air filter that, if i'm remembering correctly, they tested and found to be effective with..." | Read more » over 7 years ago