Ag8n 17 research notes and 17 wiki edits | Joined over 1 year ago

Retired, after 28 years, as an analytical chemist from a major pharmaceutical corporation.










What do I do with microplastics after being collected?

warren asked about about 9 hours ago

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How do we improve WiFi signal to a Raspberry Pi while in the air?

warren asked about 25 days ago

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How do I identify the base polymers in an unknown plastic for recycling?

profpearce asked about 26 days ago

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Can you help us with calibrating our spectrometer?

KristinaTamara asked about 29 days ago

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Can you give me mesure for spectrum? Thank you.

janajockovic47 asked about about 2 months ago

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Seeking Info re Commercial Low-cost Lead Screening Products

read_holman asked about 3 months ago

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Questions about Plantower sensors from the University of Wisconsin - Eau Claire

OrionAllgaier asked about 3 months ago

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How can nitrogen/nitrates/ammonia be measured?

warren asked about 3 months ago

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DIY Salinity Measurements with Coqui and/or Multimeter?

Bronwen asked about 4 months ago

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What tools or methods do you use to monitor odors?

Bronwen asked about 4 months ago

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CRI software for spectrometer?

FineArtLight asked about 6 months ago

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Building a case against Aluf Plastics -- polluting my town & I need help

michaelwma asked about 6 months ago

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Is Lego Spectrometer Kit able to detect Glucose?

kokoz asked about 7 months ago

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What type of aerosol was used for the calibration of the purpleair lasers?

Cbarnes9 asked about 8 months ago

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Can algae blooms be used for oil production?

Ag8n asked about 8 months ago

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Dissolved Oxygen Testing and Citizen Science

belkinsa asked about 9 months ago

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What would be the day to day use of spectroscopy?

TK_Siddharth asked about 9 months ago

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Sanity check for air sensors

Ag8n asked about 10 months ago

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View these maps at MapKnitter.org »

Title Creation date Image

Comments

Comment Last activity Moderation
"Where does incineration rate on the list? " | Read more » about 2 hours ago
"What we were taught in industrial statistic s is that often times bimodal curves work themselves out into normal curves. How? Well, even if you h..." | Read more » 5 days ago
"You could easily have a bimodal distribution in your population. But, if you gather more data, who knows? It may turn out to be normal. Ok, how ..." | Read more » 6 days ago
"The common test for outliers in industry is the t-test. Is that the test codap is using? " | Read more » 6 days ago
" Density is difficult to use. Many manufacturers use fillers like titanium dioxide as a filler. This will dramatically alter the density, dependin..." | Read more » 24 days ago
" Dumb question, but what bandwidth do you need for the video signal? " | Read more » 25 days ago
" With PVC, as the plastic degrades, you get more and more conjugated double bonds. Hate to get chemical, but the where the plastic absorbs starts ..." | Read more » 25 days ago
" Check the "baby legs" projects on microparticles. It will give some background. My own experience was in medical plastics industry. We routinely ..." | Read more » 25 days ago
" The green line on a compact florescent lamp is the one at 546 nm. There are a couple of calibration videos on the link @Warren gave that might h..." | Read more » 26 days ago
" Ref web.physics.ucsb.edu/~lecturedemonstrations/composer/pages/36.39-helium-filled balloon " | Read more » about 1 month ago
" It depends on the weight of what you are trying to lift. At sea level, based on the ideal gas law, the amount you can lift is 1.02 g of pay load..." | Read more » about 1 month ago
" The last I knew, it took calibration to set up the wavelength. One way of doing that was with a compact florescent lamp. But there may have been..." | Read more » about 2 months ago
" Green is about 550 nm. Can you tell me the application the local people would like to use it for? Regards " | Read more » about 2 months ago
" Consumer reports did an evaluation of radon test kits a few years ago. Might be a good place to start. " | Read more » about 2 months ago
" You usually measure visible spectrum in nanometers (nm). Resolution is measured the same way, but tested much differently. Can you give more inf..." | Read more » about 2 months ago
" The United States pharm. had a lot of tests for lead and other elements( like arsenic and barium). You can't argue with its scientific validity- ..." | Read more » 3 months ago
" My mistake, it chemiluminesces in the red, not the blue. Sorry about that. " | Read more » 3 months ago
" I've used ion chromatography(IC) to analyze for a number of ions, including nitrate and nitrite. The new instruments dedicated to IC are much bet..." | Read more » 3 months ago
" Don't know exactly how you want the spreadsheet fille d in on edxrf. I have used it extensively, in an r&d environment. I've only used a han..." | Read more » 3 months ago
"Warren got most of the problems with kjeldahl. Here are a few more. Kjeldahl testing takes some specialty glassware. It's not terribly hard to l..." | Read more » 3 months ago
" The only other thing to point out- all these calculations assume the particles are spheres. We had particle surface area measuring equipment. T..." | Read more » 3 months ago
" On pcbs (it's the chlorine part I 'm worried about, here), whenever you put a chlorine containing material in a flame, the flame should turn green..." | Read more » 4 months ago
" From a quick look, it seems that PAHs and PNAs (polynuclear aromatic hydrocarbons) are the same thing. We did PNA analysis on carbon black that w..." | Read more » 4 months ago
" You can buy the instruments with a microprocessor attached. All you have to do is take a syringe, put the liquid in the glass tube, and it will r..." | Read more » 4 months ago




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