Comments

Author Comment Last activity Moderation
nshapiro "Gotcha. In my testing in 2011 i did some of the test and mailed test kits to those i couldn't meet in person. altho it wasn't statistically signifi..." | Read more » about 9 years ago
nshapiro "This is great. The vintage timers are pretty amazing although they add a lot of weight and thus money and are not tamper proof. We could just inclu..." | Read more » about 9 years ago
nshapiro "Great. I've ordered the last two as they have the accuracy we need--will report back by the end of the week. way cheaper than the one i had found. ..." | Read more » about 9 years ago
nshapiro "It looks like most of the cheap hygrometers are of the coil and dial variety which I worry about the robustness of. This one is temp and humidity ..." | Read more » about 9 years ago
nshapiro "This looks! great! what do you think the QR code would be? We might need there to be a solid color that the tube is placed on top of for consistenc..." | Read more » about 9 years ago
nshapiro " There we go! working now. " | Read more » about 9 years ago
nshapiro "Hey Jeff, The card mock up is 5x8. The alcohol thermo and humidity meter is 9x 2.5 at its thickest point. I have 2 inch diameter coil spring humid..." | Read more » about 9 years ago
nshapiro "@danbeavers do you know the duty cycle of the AC when you did the follow up testing? " | Read more » about 9 years ago
nshapiro "we would probably want 1 degree accuracy as the visual read out of the tube has to be multiplied by a temperature coefficient on a 1 degree scale. ..." | Read more » about 9 years ago
nshapiro " Here is what the thermo and humidity meter look like next to the card. We could still use an alcohol thermo, this one is just a bit clunky. Also ..." | Read more » about 9 years ago
nshapiro "@danbeavers were you using the whisper pump or another pump? I think the whisper pump can handle one pump and one vacuum if need be " | Read more » about 9 years ago
nshapiro "My favorite memory so far is the kinds of sustained, difficult and trans disciplinary conversations that I've been privy to in my short time workin..." | Read more » about 9 years ago
nshapiro "also you probably don't need to vacuum seal the sensors. you could just cut wholes on the bottom of those tupper wear and it will probably be weath..." | Read more » over 9 years ago
nshapiro "It depends how far from the infrastructure you will be monitoring and what infrastructure you will be monitoring. Some states have the geology for ..." | Read more » over 9 years ago
nshapiro "Hey @claf I'm doing some air monitoring work in areas of intensive fracking here in PA (weather variables, formaldehyde, ultrafine particulate matt..." | Read more » over 9 years ago
nshapiro "@mathew I just ordered the temp/humidity meter you recommended. In terms of design maybe it can fit horizontally under the A, B, C columns? " | Read more » over 9 years ago
nshapiro "Sorry for the slow reply! I think my spam filter may have been hoarding emails from PL. The color changes from a waxy yellowish orange to pink and..." | Read more » over 9 years ago
nshapiro "Here is some alternative tech to the FLIR-- hyperspectral camera for methane visualization (which is one of the most expensive gases to monitor). M..." | Read more » over 9 years ago
nshapiro "I think so. Those tubes require one pump on the Draeger Tube proprietary pump. So if one were to rent their proprietary pump for a single day and a..." | Read more » over 9 years ago
nshapiro "That sounds like a great idea. The flow meter remains the most expensive component so reducing this cost is clutch. This sounds like something that..." | Read more » over 9 years ago
nshapiro "Thanks, David! This is really helpful! " | Read more » over 9 years ago
nshapiro "Hey David, yes, you are absolutely right. Ventilation in situations with clean outdoor air is definitely the best short-term option. It is cheap/fr..." | Read more » over 9 years ago
nshapiro "Thanks @amysoyka! That's really interesting. Do you know if lactic acid is known to break down formaldehyde and that the outputs of that breakdown ..." | Read more » over 9 years ago
nshapiro "Hi willie! Its a great project! I haven't read the Apte documentation, but mobile sensing does create some difficulties in terms of maintaining the..." | Read more » almost 10 years ago