## pH Sensors ## Questions [questions:ph] ## Activities [activities:ph] **** ## Updates [notes:ph] ...

Author Comment Last activity Moderation
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 » 8 months 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 » 8 months 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 » 8 months ago
Ag8n "Clarification. Acidic media is pH 3. " | Read more » 8 months 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 » 8 months 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 » 8 months 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 » 8 months 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 » 8 months ago
stevejohnson "thanks for the information " | Read more » 8 months 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 » 8 months 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 » 8 months 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 » 8 months 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 » 9 months ago
alejobonifacio "Glad to hear that @bhamster! Comming soon the english version of the activity ;) Yes, there are some research papers that used this natural pigment..." | Read more » 10 months ago
bhamster "This is so cool, @alejobonifacio, I had no idea about this cabbage capability! Do you know of any examples where this pH detection method has been ..." | Read more » 10 months ago
sirazul71 "Nice writing. Thanks Life Store is one of the best and most popular online stores. You will find everything you need in the life store. Visit in ou..." | Read more » about 1 year ago
bhamster "@alejobonifacio, do you have any thoughts or experience with this in river habitats you've worked in? " | Read more » about 1 year ago
liz "Have you thought at all about whether you are aiming to go directly to procuring lab data of baseline water quality that lab scientists will testif..." | Read more » over 1 year ago
waniakzmi "You are doing well for well-being looking forward to it we are working to provide the best ease by providing medical equipment and products online ..." | Read more » over 1 year ago
warren "Hi @Ag8n - thanks, i'm thinking of an activity which young people could do in a group, over the course of a month or so, to create a map of a water..." | Read more » over 1 year ago
Ag8n "Project CyAN with the EPA might be of interest. It is using a newly launched satellite to track cyanobacteria. The new satellite was launched 5-6..." | Read more » over 1 year ago
Ag8n "Ammonia, as from fertilizer, would also increase the pH. It would make the algae like the water, too. There are several methods to test for ammoni..." | Read more » over 1 year ago
Ag8n "Could you be more specific? What exactly the problems are? Algae blooms due to nitrogen runoff are being tracked in some of the great lakes by sa..." | Read more » over 1 year ago
raminrahmatiaranads "If you have never encountered the term آران, which you occasionally hear in the world of digital marketing and content production, be assured that ..." | Read more » over 1 year ago