Comments

Author Comment Last activity Moderation
Ag8n "Nice sharp lines on the neon spectrum! Good job! " | Read more » almost 6 years ago
Ag8n "Anything to help. Those wavelengths are common in HPLC work. Before the new instruments, for uv/vis detectors, they would take a mercury lamp and..." | Read more » about 6 years ago
Ag8n "The typical light sources used for commercial UV spectrophotometers are deuterium lamps. These light sources easily cover 190 nm to 400 nm. They ..." | Read more » about 6 years ago
Ag8n "The instruments to do The testing you want are complicated. It's not that the spectrometer couldn't be used, but it would take a lot of work. Her..." | Read more » about 6 years ago
Ag8n "Well, exactly what approach are you thinking of? Let's see if the already tried can be eliminated and maybe make it easier to make progress. " | Read more » about 6 years ago
Ag8n "Thanks! Give me a couple of days and I'll email you a more detailed description. The help is appreciated! " | Read more » about 6 years ago
Ag8n "There are a few " killers" in the referenced article. One was the remark about converting arsenic to volatile hydrides. One of those hydrides cou..." | Read more » about 6 years ago
Ag8n "A partial answer. Each block of analyzers is heated to 37.0 C . They do not use a spectrometer. Instead, each cell in the analyzers has a led (a..." | Read more » about 6 years ago
Ag8n "Thank you for your reply. Very good sir. That would save time! " | Read more » about 6 years ago
Ag8n "My apologies, but I still don't see where you are trying to go. The QCM will change frequency with weight. How is this going to work with the spec..." | Read more » about 6 years ago
Ag8n "Very interesting project. How do piezo products the into the product? Are you using ceramic or polymer piezo products? Good luck with your proje..." | Read more » about 6 years ago
Ag8n "Yeah, I'm still old school. That paper is the way for me! " | Read more » over 6 years ago
Ag8n "It's very useful. Thank you for the information. Atomic emission is good, but for maximum sensitivity, you need variations. These are atomic abs..." | Read more » over 6 years ago
Ag8n "Time for me to start dusting off Raman stuff. " | Read more » over 6 years ago
Ag8n "Excellent project. Excellent data analysis. Sorry the project didn't work out the way you wanted. " | Read more » over 6 years ago
Ag8n "What do you think of the ones that are transparent on all four sides? That way the cuvettes can be used for trans, abs, flores, or turbidity. The..." | Read more » over 6 years ago
Ag8n "Ratio= (absorbance interesting area/absorbance uninteresting area ) " | Read more » over 6 years ago
Ag8n "Here are some calculations. Don't know if they will help... Btw, I noticed the halogen, and would suggest holding on to it. At least until other t..." | Read more » over 6 years ago
Ag8n "Excellent data!! What direction are you headed for analysis? Absorbance, transmittance, reflectance, or some of the ratio stuff done with other a..." | Read more » over 6 years ago
Ag8n "One of the links on the page was for an aotf nir spectrophotometer. Part of this instrument was a vco that could be tuned from 75 mhz to 120 mhz. ..." | Read more » over 6 years ago
Ag8n "The device referenced has very mixed reviews on the internet. And it does seem pricey. As a suggestion, borrow or rent one first. Try it and see..." | Read more » over 6 years ago
Ag8n "I may be wrong, but it looks like a fast Fourier transform (FFT) version of this instrument is possible. Any suggestions on how to approach that?..." | Read more » over 6 years ago
Ag8n "Maybe. It depends on the chromophores present, the assay method used, and a bunch of other factors. And that's before you talk about the instrume..." | Read more » over 6 years ago