| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | "Interesting paper on this same subject. " Application of Butterfly Pea extract as an indicator of acid - base titrations " by Nyi Mekar Saptarini ..." | Read more » | almost 3 years ago | |||
| Ag8n | "Now, there Maybe differences in how the sample is obtained. Don't know about that. " | Read more » | almost 3 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 » | almost 3 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 » | almost 3 years ago | |||
| Ag8n | "Please tell me if this is correct. Is a double decimeter also called a ruler calibrated in centimeters? " | Read more » | almost 3 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 » | almost 3 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 » | almost 3 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 » | almost 3 years ago | |||
| Ag8n | "If you are using Gc/ms, there are two common type detectors, quad detectors and ion trap detectors. I'm partial to quads. But I've had salesman t..." | Read more » | about 3 years ago | |||
| Ag8n | "Of you go to a commercial lab...quite expensive. There is one commercial instrument maker that is very good at donating ( or at least dramatically..." | Read more » | about 3 years ago | |||
| Ag8n | "My purpose is strictly to measure. The cleanup part is not my strong point, so it must be left to someone else. But to go on with the testing. T..." | Read more » | about 3 years ago | |||
| Ag8n | "Others are better trained on how to soak up absorb the oil than me. Yes, I had some training. But only on a lab scale. It wouldn't work for the ..." | Read more » | about 3 years ago | |||
| Ag8n | "Ok. The last time I did this test was quite a few years ago. So there is probably something better, now. The quick test was called "oil and greas..." | Read more » | about 3 years ago | |||
| Ag8n | "I don't know that. The company with a plant nearby had a discharge permit. No idea anymore of the permit number. Most plants would prefer to disc..." | Read more » | over 3 years ago | |||
| Ag8n | "Please report everything that you are being discharged into the water seems weird. But a question. Every now and then, a storm sewer in a relativ..." | Read more » | over 3 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 3 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 3 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 » | over 3 years ago | |||
| Ag8n | "Thank you! Regards " | Read more » | over 3 years ago | |||
| Ag8n | "Found a file, labeled just 3414, that is a method for the analysis by fluorometer. They used 360 nm for excitation and then read the signal at 400..." | Read more » | over 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 » | over 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 » | over 3 years ago | |||
| Ag8n | "It was believed to be high level of nitrates, although maybe the time applied and amount applied has a major part in it, too. To be honest, I think..." | Read more » | over 3 years ago | |||
| Ag8n | "Very good project! With the corona virus, many uvc flashlights have become cheaply available. That would add some danger to the project. But wou..." | Read more » | over 3 years ago |