| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| casadaborracha_garra | "https://docs.google.com/presentation/d/18ovCR07aUYKgYiAthe2g827jGl6ApY9onlko8SfU8Gs/edit?usp=sharing " | Read more » | 29 days ago | |||
| podologo_peecorpo | "https://docs.google.com/forms/d/e/1FAIpQLSfVhmXKUYsgKYnvYVupUCWvD0BP_BBqONB-J_mnLEYiST9q0g/viewform " | Read more » | 30 days ago | |||
| iransacco | "iransacco did this! " | Read more » | 7 months ago | |||
| scifers | "@warren are you still active on this site? I'm a teacher trying to work with the archived version and have some questions " | Read more » | 11 months ago | |||
| scifers | "@warren are you still active on this site? I'm a teacher trying to work with the archived version and have some questions " | Read more » | 11 months ago | |||
| scifers | "@warren Are you still active on this site? I'm a teacher trying to work out using the archived version and have some questions " | Read more » | 11 months ago | |||
| Miniature_Kites | "For step-by-step instructions, see the amazon book called, "Miniature Kite Plans" with 26 miniature kite plans. Each plan states the difficulty, ti..." | Read more » | over 1 year ago | |||
| JasmineKurb | "Wow, This is amazing. Science is completely based on experiments. If you are staying science then you should know how to do experiments and you mus..." | Read more » | almost 2 years 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 » | about 2 years 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 » | about 2 years 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 » | about 2 years ago | |||
| Ag8n | "Clarification. Acidic media is pH 3. " | Read more » | about 2 years 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 » | about 2 years 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 » | about 2 years 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 » | about 2 years 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 » | about 2 years ago | |||
| stevejohnson | "thanks for the information " | Read more » | about 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 » | about 2 years 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 » | about 2 years 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 » | about 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 | |||
| getbacklink | "GetBacklink is Search Engine Optimization (SEO) Specialist analyzes Website, reviews and implements changes to websites so they are optimized for s..." | Read more » | about 3 years ago | |||
| appz | "http://vaishma.com/ " | Read more » | about 3 years ago | |||
| appz | "https://www.hallmarkauditors.com/services/business-incorporation/freezone-company-set-up-in-uae/ " | Read more » | about 3 years ago |