Community research

stevie commented on Are there simple tests for nitrates in well water? 10 days ago

Also, the drinking water standard for nitrates is 10 milligrams per liter (10 mg/l) nitrate-N, or...

stevie commented on Are there simple tests for nitrates in well water? 10 days ago

I just looked into these a little further. All of them use sulphuric acid which can be dangerous....

warren commented on Is there a way to make a cheaper "UV Hound"? 10 days ago

I wonder how the Hound is used if it needs a reflector to bounce the beam back. maybe you have to...

stevie commented on Terrain Surveying with Emery Boards 11 days ago

Update: the Emery Board has also been used to measure water depth around pipeline sites

warren commented on Is there a way to make a cheaper "UV Hound"? 11 days ago

Sure! I think the takeaway is that searching for a price for the OPSIS, or pricing for a differe...

joyofsoy commented on Lawn Fertilizer Runoff Causes Algae Bloom Locally and Contributes to Global Issues 11 days ago

Shared this on the Public Lab Twitter and received this response: Measuring conductivity might b...

liz commented on Manual de sondeo de subsuelo 11 days ago

WOW, this is super documentation!

liz commented on Do you have experience using a gas chromatograph? 11 days ago

Thank you @Ag8n!

liz commented on Is there a way to make a cheaper "UV Hound"? 11 days ago

Big thanks for unpacking all this @warren

warren commented on Is there a way to make a cheaper "UV Hound"? 12 days ago

Deep UV or DUV is pretty hard to detect. This article talks about it: https://www.vision-systems....

warren commented on Is there a way to make a cheaper "UV Hound"? 12 days ago

Hi, just found it interesting when i read about the UV Hound - it's actually not a mass spectrome...

Leksu commented on Testing a cheap webcam with Infragram - spoiler alert: nope 14 days ago

Thanks for the post and comments @warren ! Have you (or anyone else) had luck with other similar ...

amir_hudsonconsulting commented on Adafruit Feathers for datalogging 14 days ago

My goal is to log data to an SD card, and store the data locally on the SD card. Is it possible t...

warren commented on Microscope not focusing right 14 days ago

Hi! focusing can be tough, but if you're occasionally getting things into focus you're doing well...

warren commented on Manual de sondeo de subsuelo 14 days ago

❤️ me encanta! Gracias!!

Ag8n commented on Do you have experience using a gas chromatograph? 16 days ago

Yes, I have a lot of experience with a number of types of gc. First, if you are talking about bu...

jjcreedon commented on What are air testing labs or companies we can recommend to our town board that our community can trust? 17 days ago

Just want to make sure it’s an EPA approved lab.. that’s all. We have partnered w ALS .. cause of...

stevie commented on How do we keep the pressure and momentum high after a recent court ruling win? 17 days ago

Sarah Martik from the Center for Coalfield Justice recommended: "holding some town halls to talk ...

stevie commented on What are air testing labs or companies we can recommend to our town board that our community can trust? 17 days ago

I also heard about Performance Analytical, Inc. in CA. @JackieJamesCreedon is there a reason for...

warren commented on Draft of a Public Lab Software Roadmap: Comments welcome! 17 days ago

I updated this diagram!

cfastie commented on Adafruit Feathers for datalogging 18 days ago

I haven't tried that Feather combination. I have also never seen a list of Feather-Featherwing co...

stevie commented on Are there simple tests for nitrates in well water? 18 days ago

Hi! This is helpful thank you!! can you say more about the tests- how you might conduct it, the c...

healthydarkside commented on Are there simple tests for nitrates in well water? 19 days ago

There are four different types of nitrate tests: the brown ring test, Devarda's test, diphenylami...

Engineerjaykumar commented on Are there simple tests for nitrates in well water? 20 days ago

There is so many test for this these are: Nitrate can be removed from drinking water by three met...

Engineerjaykumar commented on MapKnitter map of P-Cola Beach 1 20 days ago

The cementconcrete structure in side in the photo is so nice. What is that concrete structure? ma...

amir_hudsonconsulting commented on Adafruit Feathers for datalogging 21 days ago

Hi I'm wondering does anyone know if you can stack the Adafruit Feather M0 Bluefruit LE with the ...

Engineerjaykumar commented on What resources are available to help people monitor noise pollution? 23 days ago

But, in other sense at the very complex residential city area, the noise polution can be reduced ...

eustatic commented on Residents are fighting back against plastics odors in this small NY town 27 days ago

sorry, new york, not new jersey, my apologies!

eustatic commented on Residents are fighting back against plastics odors in this small NY town 27 days ago

see this here: https://biologicaldiversity.org/w/news/press-releases/legal-petition-seeks-new-ai...

eustatic commented on Residents are fighting back against plastics odors in this small NY town 27 days ago

I assume y'all are talking to center for biological diversity and looking for nurdles in the rive...