| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | " Check the "baby legs" projects on microparticles. It will give some background. My own experience was in medical plastics industry. We routinely ..." | 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 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 » | almost 5 years ago | |||
| Ag8n | " Green is about 550 nm. Can you tell me the application the local people would like to use it for? Regards " | Read more » | almost 5 years ago | |||
| Ag8n | " 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 5 years ago | |||
| Ag8n | " 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 » | about 5 years ago | |||
| Ag8n | " You might want to look into ANDalyze. They use a new technology based on DNA for heavy metal analysis in water samples. I'd need to see validati..." | Read more » | about 5 years ago | |||
| Ag8n | " First off, spectrometers are much more common than spectrophotometers, these days. And cheaper too. T he method you referenced relies heavily on..." | Read more » | about 5 years ago | |||
| Ag8n | " I've used a version of this method. We used it for lead and just for visual comparison. There was a link for it but it wouldn't work. It was th..." | Read more » | about 5 years ago | |||
| Ag8n | " I'm downloading it now. Give me a day or two to go through it. Thanks! " | Read more » | about 5 years ago | |||
| Ag8n | " You might be able to find some thing. Let's take it step by step. First, the only one of those metals that has any color in the Vis is chromium. ..." | Read more » | about 5 years ago | |||
| Ag8n | " First, using a spectrometer in the visible range ,by itself, normally isn't possible. You normally have to add chelating agents to make the metal..." | Read more » | about 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 | " Yes, ion exchange is a good idea. Usually, it's cation exchange, anion exchange, and actived charcoal, followed by the particle filter. A conduc..." | Read more » | over 5 years ago | |||
| Ag8n | " One item tried in industry was to take good quality water and run them through filters small enough to stop microbes ( the last I heard, about 0.2..." | Read more » | over 5 years ago | |||
| Ag8n | " Suggestions- Identify polymers used in products produced. Hopefully, this will be supplied by Aluf. Identify possible hazardous ingredients of pr..." | Read more » | over 5 years ago | |||
| Ag8n | " The "repro" mentioned in the report is short for reprocessing. This plastic ha s seen a lot of heat and is much more likely to break down. Hence ..." | Read more » | over 5 years ago | |||
| Ag8n | "One other item got some attention. The company put some antimicrobials in some of their products. These can often be irritating to humans, especi..." | Read more » | over 5 years ago | |||
| Ag8n | " The sheets of polymer can be made out of many materials, some of which are PVC, LDPE, and HDPE. On top of this, there are a variety of materials ..." | Read more » | over 5 years ago | |||
| Ag8n | " This will take a while- so bear with m e. Many black plastic bags are made of polyvinyl chloride ( PVC). When this degrades, it generates hydroc..." | Read more » | over 5 years ago | |||
| Ag8n | "Please look at the data sheet for the purple air sensors. Specifically, the r2 data for the pm1.0, pm2.5, and pm 10. At least in the medical fiel..." | Read more » | over 5 years ago | |||
| Ag8n | "Another good way to quantitate sugars is with a refractometer. They are pretty cheap and often used in wineries. " | Read more » | over 5 years ago | |||
| Ag8n | "There are a number of parts to six sigma. The different parts go from statistical analysis to design of experiment (DOE). While there are some bus..." | Read more » | over 5 years ago | |||
| Ag8n | "One industry program for statistics ( or sadistics, as a nicname) is six sigma. This is a relatively expensive program that includes ( not kidding..." | Read more » | over 5 years ago |