Comments

Author Comment Last activity Moderation
Ag8n "Huh! Around here, it's oil, gas, or pipelines. Sand can be an issue. Just a new one. " | Read more » over 2 years ago
Ag8n "Now, there Maybe differences in how the sample is obtained. Don't know about that. " | Read more » over 2 years ago
Ag8n "From a scientific point of view, yes they can. Even an aquarium test kit can often be used to test water sources. The problem is with regulatory ..." | Read more » over 2 years ago
Ag8n "For a couple other reads, look up "The Effect of pH on Color Behaviour of Brassica oleracea Anthocyanin" in Journal of Applied Sciencies, volume 11..." | Read more » over 2 years ago
Ag8n "The nir instruments are heavily used in agriculture. The company I worked for wanted to use Near Infra-Red (reflectance), also called NIRR, to dete..." | Read more » over 2 years ago
Ag8n "Please go to the web page mentioned. You will see that this test works by reacting the extract with iron (III) chloride. Many other materials wil..." | Read more » over 2 years ago
Ag8n "A better approach would be Uv/ vis. Phenols, such as BPA, absorb at about 280 nm. So you would set up an extraction to pull out the BPA and run a..." | Read more » over 2 years ago
Ag8n "Please tell me if this is correct. Is a double decimeter also called a ruler calibrated in centimeters? " | Read more » over 2 years ago
Ag8n "Thank you for the reply. The new page is much better. As for quartz cuvettes, I used them for 28 years in UV/vis instruments. That was part of t..." | Read more » over 2 years ago
Ag8n "I think this is a typo. Under container material, the first entry is quartz(a crystalline silicate material). I think it is meant to be quart( a ..." | Read more » over 2 years ago
Ag8n "Need some more information. But have a couple of ideas!! " | Read more » over 2 years ago
Ag8n "First, I'd like to thank Alejo for posting this page. It is very helpful. Then, I' d like to refer you to the comments page in compound chem ( da..." | Read more » over 2 years ago
Ag8n "You learn to accept many environmental issues. The color of metal chelates in stream from a storm water discharge has a certain charm, but it stil..." | Read more » over 2 years ago
Ag8n "Thank you! This is very helpful. " | Read more » over 2 years ago
Ag8n "We were in an medical environment, usually class 100,000. These instruments are different from the ones used by public lab, but based on the same ..." | Read more » over 2 years ago
Ag8n "Have a good holiday! " | Read more » over 2 years ago
Ag8n "The data is impressive. Dumb question here. Does the instrument autimatically check it's zero point? " | Read more » over 2 years ago
Ag8n "This looks excellent to me! Thank you! " | Read more » over 2 years ago
Ag8n "Clarification- the biolumix works on transmitted light. For this application( root tracking), you would need reflected light. " | Read more » over 2 years ago
Ag8n "First, see somagen.com/products/biolumix/ The instrument was quite interesting. It used transmitted light and cylinders, not plates. My friend ..." | Read more » over 2 years ago
Ag8n "There are some automated microbial systems. They do pretty much all the work. They incubate the samples. And instead of colony counting, they ..." | Read more » over 2 years ago
Ag8n "Do you want to look at commercial designs already in existence? Or would you rather stay away from them so as not to contaminate your design? Regar..." | Read more » over 2 years ago
Ag8n "Thanks for the reference. I'll read it over. Regards. " | Read more » over 2 years ago
Ag8n "For example, in the medical manufacturing field, class 100,000 rooms are common. Those are not the same units used in the environmental work. " | Read more » over 2 years ago