| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "Great writeup, Luke! cool work. " | Read more » | almost 9 years ago | |||
| LukeS | "@kkoerner, I tried a similar pump when I was researching this and it created too much turbulent/pulsed of the air stream to get a good measurement ..." | Read more » | almost 9 years ago | |||
| liz | "Ok great, thank you for the feedback! My next workshop is a demo only, so the voltage / electrolysis issue won't matter in this case thank goodness..." | Read more » | almost 9 years ago | |||
| donblair | "Hey Liz! Wow -- this looks great! Since this research note was originally posted, there are a few insights that have emerged: Silicone doesn't ..." | Read more » | almost 9 years ago | |||
| liz | "So, I'm making 15 of these conductivity probes to go along with the Digikey order that makes 15 Coquis. Last night cut open 15 plastic bottles with..." | Read more » | almost 9 years ago | |||
| liz | "I found a power drill very useful to get the screws into the caps. Here's what you need to finish the ends of the wires from the alligator clips: ..." | Read more » | almost 9 years ago | |||
| liz | "Looks great! maybe we could add a picture of how the cut ends of the alligator clips go into the terminal block? " | Read more » | almost 9 years ago | |||
| eustatic | "awesome effort. " | Read more » | about 9 years ago | |||
| semitones | "@donblair is there text that goes along with this too? " | Read more » | about 9 years ago | |||
| mathew | "further followup on analysis of samples. " | Read more » | over 9 years ago | |||
| mathew | "read my follow-up on imaging the samples " | Read more » | over 9 years ago | |||
| bareczek | "interesting " | Read more » | over 9 years ago | |||
| nshapiro | "@kkoerner Hi Karl! Great find! It would be fantastic if you could request a quote on these. We are planning on have a lending library of these tool..." | Read more » | over 9 years ago | |||
| kkoerner | "Any thoughts on using a smaller pump? If you're only trying to draw 0.3 SLPM, there are a couple of pumps (see the attached datasheet and catalog) ..." | 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 | |||
| 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 | |||
| 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 | |||
| mathew | "Our portland office has .026ppm (26ppb) of formaldehyde when measured over by our packing and shipping area. That's over 3 times the chronic dange..." | Read more » | over 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 » | over 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 » | over 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 » | over 9 years ago | |||
| nshapiro | "Here is a photo of the tip breaker that is on some of the analog pumps. We could also pre-score them in a standardized way to create consistent ope..." | Read more » | over 9 years ago | |||
| mathew | "@Danbeavers what if we put a standardized, small orifice on the broken end of the glass tube that is always smaller than a hole broken into the tub..." | Read more » | over 9 years ago | |||
| danbeavers | "Perhaps @Stevie could order them. " | Read more » | over 9 years ago |