| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| livingenaanasebh | "wow this is wondeful " | Read more » | 8 months ago | |||
| bhamster | "@bhamster awards a barnstar to imvec for their awesome contribution! " | Read more » | 11 months ago | |||
| alejobonifacio | "I did this! Hi! Long time has passed since this original post. I was doing some in field measurements with this Cave Pearl Project based data logge..." | Read more » | 12 months ago | |||
| michelleiL | "Hi @kgradow1, thank you for sharing all this info on how to read EIS. I'm wondering if you have info on what are the stages of an EIS? For example..." | Read more » | about 1 year ago | |||
| royshaw | "Thank you for sharing this. It is great to know how the environmental test results to health standards worked. A clean environment reflects on the ..." | Read more » | about 1 year ago | |||
| Ag8n | "The data shows that natural titration indicators with long shelf life (90 days) do exist ( see the Hippeastrum note above). However, Red cabbage d..." | Read more » | over 1 year ago | |||
| Ag8n | "The research shows that natural titration indicators, with good shelf life, do exist ( see Hippeastrum, above). However, Red cabbage does not appe..." | Read more » | over 1 year ago | |||
| Ag8n | "The acid (from the pH 3 solution ) for the cabbage indicator could mess up some titrations. A blank might need run(and, depending on the titration..." | Read more » | over 1 year ago | |||
| Ag8n | "Clarification. Acidic media is pH 3. " | Read more » | over 1 year ago | |||
| Ag8n | "Check this reference: "Evaluation of red cabbage dye as a potential natural color for pharmaceutical use" by Neela Chigurupati, et. al. Industrial..." | Read more » | over 1 year ago | |||
| Ag8n | "Some natural indicators can have shelf lives of up to 90 days in solution. See "Hippeastrum hybridum anthrocyanin indicators of acid - base titrat..." | Read more » | over 1 year ago | |||
| 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 » | over 1 year ago | |||
| hunternick363 | "This is a nice and simple method of measuring the PH of a solution. I remember these kinds of experiments we used to do in science class. We have t..." | Read more » | over 1 year ago | |||
| stevejohnson | "thanks for the information " | Read more » | over 1 year 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 1 year ago | |||
| bhamster | "I did this! We tested vinegar, baking soda, lemon juice, pickle juice, and carbonated water. A lot of acids easily available in the kitchen. Then w..." | Read more » | over 1 year ago | |||
| alejobonifacio | "Hi @Ag8n! Thanks for your reply! I had this cabbage solution in fridge almost a week and I didn't see an appreciable color change. I don't know if ..." | Read more » | over 1 year 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 1 year ago | |||
| Ag8n | "Thank you! Regards " | Read more » | almost 2 years ago | |||
| xose | "Here the full Chandler - Lerner paper :) https://sci-hub.st/https://doi.org/10.1111/wej.12112 " | Read more » | almost 2 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 » | almost 2 years ago | |||
| xose | "@xose awards a barnstar to alejobonifacio for their awesome contribution! " | Read more » | almost 2 years ago | |||
| alejobonifacio | "Hi again @Ag8n! I've just read again the Research Paper Chandler, D. M., & Lerner, D. N. (2015). A low cost method to detect polluted surface w..." | Read more » | almost 2 years ago | |||
| alejobonifacio | "Hi @Ag8n !!! I am very happy that the project liked to you. I do not know if these kind of UV lamp (sterilizer) be more sensitive to optical bright..." | Read more » | almost 2 years ago |