Comments

Author Comment Last activity Moderation
Ag8n "As with everything else, there are many possible interferences. Is this project still active? " | Read more » over 1 year ago
Ag8n "Doggone spell check. It should be" These are emission lines, so no lamp is needed. " not " These intermission lines, so no lamp is needed. " " | Read more » over 1 year ago
Ag8n "Just caught this whole looking up some other stuff. The technique most commonly used is atomic emission spectroscopy AES. The flame is so strong,..." | Read more » over 1 year ago
Ag8n "Maybe transmission is possible. Most of the materials we analyzed could only be tested with reflectance. See if that makes sense for the material..." | Read more » about 2 years ago
Ag8n "I think your best bet is to call ocean optics. They used to be open to experimentation with their equipment. Unfortunately, the last time I dealt..." | Read more » over 2 years ago
Ag8n "I don't plan on making the modifications in the near future. If someone else would like to try it, feel free. To me, this is the initial investig..." | Read more » over 2 years ago
Ag8n "Thank you for the help. Have you used ASTM D6592-1? It was written in 2001 and removed in 2010 (apparently for no revalidation). But it used chem..." | Read more » over 2 years ago
Ag8n "Thank you for the papers. Still working my way through them. Wanted to comment on the difference between chemi-,bio-,and straight luminescence. ..." | Read more » almost 3 years ago
Ag8n "A big problem with this type of instrument isn't the concept. That's not too hard. It's getting the reaction to go at a decent rate. Not too fas..." | Read more » almost 3 years ago
Ag8n "The blood analyzer instruments from say 2000 were good, but not an order of magnitude better than those of a few years earlier. What was different..." | Read more » almost 3 years ago
Ag8n "Looks great! " | Read more » almost 3 years ago
Ag8n "If a source like the sun or an incandescent lamp is used, then maybe using a photographic bg20 filter as a standard would do. The spectrum they a..." | Read more » almost 3 years ago
Ag8n "There is a closely related chemical recently added to the USP for uv/vis standardization. It is a solution of didymium. Some places also use a gl..." | Read more » almost 3 years ago
Ag8n "https://youtu.be/u5tUmdWALn0 Hopefully, this link works to the video " | Read more » almost 3 years ago
Ag8n "Of you take a look at commercial instruments, they will usually use holmium oxide or other holmium salts for calibration. Great. These salts are ..." | Read more » almost 3 years ago
Ag8n "Found something.It's a YouTube post by chem_talk on neodymium. It's a long way from complete, but according to the post, this rare earth isn't rar..." | Read more » almost 3 years ago
Ag8n "I hate autocorrect. It's pyrolyzing, but autocorrect thought was an error and made it paralyzing. Sorry. " | Read more » over 3 years ago
Ag8n "Just to give an idea of what's going on, you're paralyzing a bit of the stopper. Then burning it to see the flame and flame color. It's very simi..." | Read more » over 3 years ago
Ag8n "Very good work. Another possible demonstration. I worked for a pharmaceutical company. We would check the incoming stoppers to see if they had b..." | Read more » over 3 years ago
Ag8n "There are a number of emission spectra used with the spectrometer. As an example, the instrument is calibrated with the emission spectrum from a ..." | Read more » almost 5 years ago
Ag8n " 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 » almost 5 years ago
Ag8n " The kits for these tests ( someone correct me if I'm wrong) appear to be made by RenekaBio. A quick look down the test procedure and method showe..." | Read more » over 5 years ago
Ag8n "You know, there is a type of visible reflectance done often. It's the type used for paint matching in hardware stores and other similar places. T..." | Read more » over 5 years ago
Ag8n "The most common place for reflectance work is in infra-red(IR) and near infra-red (NIR) work. In the NIR, this is called NIRR. With IR, the most ..." | Read more » over 5 years ago