pH
activity:ph

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


Author Comment Last activity Moderation
casadaborracha_garra "https://docs.google.com/presentation/d/18ovCR07aUYKgYiAthe2g827jGl6ApY9onlko8SfU8Gs/edit?usp=sharing " | Read more » 9 days ago
podologo_peecorpo "https://docs.google.com/forms/d/e/1FAIpQLSfVhmXKUYsgKYnvYVupUCWvD0BP_BBqONB-J_mnLEYiST9q0g/viewform " | Read more » 10 days ago
iransacco "iransacco did this! " | Read more » 6 months 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
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 » over 2 years 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 » over 2 years ago
DrJohnBarrett "I have more sophisticated instruments for water quality testing, if needed.. " | Read more » almost 6 years ago
stevie "Also, we split up the kit before the workshop. We had the students divide into groups and rotate through the testing, so everyone was able to get h..." | Read more » almost 6 years ago
stevie "Here's the page we put together to make a worksheet for students. It's from the materials in the book, but since we were doing this with 10 or so s..." | Read more » almost 6 years ago
WaterGeek "Nice work. That Arduino sketch (.ino) available? " | Read more » about 6 years ago
incaking "/* Ph And Temperature Sensing Sample Code * ph meter sensor data reading * real time temperature monitoring Hardware List * 18B20 temperature s..." | Read more » over 6 years ago
shanlter "@shanlter awards a barnstar to incaking for their awesome contribution! " | Read more » over 6 years ago