lon:-64
lon:-64


Author Comment Last activity Moderation
Ag8n "The conductivity cell should take the place of Rx. So disconnect the conductivity cell, disconnect Rx, leave the one of the conductivity cell conn..." | Read more » about 1 month ago
alejobonifacio "Thanks @Ag8n for the explanation! I am learning a lot! :nerd_face: " | Read more » about 1 month ago
alejobonifacio "Hi @Ag8n! What you suggest sounds interesting. Would it be something similar to the attached diagram? " | Read more » about 1 month ago
Ag8n "Further note-EC is electrical conductivity " | Read more » about 1 month ago
Ag8n "Especially in mixtures, not all soluble solids are conductive. So yes, you can dissolve (or sometimes suspend) something inert in water. We would..." | Read more » about 1 month ago
warren "This is very cool! I do wonder if TDS is going to be consistently correlated with conductivity -- i may just not be well informed but isn't it poss..." | Read more » about 1 month ago
Ag8n "Look up conductivity cell and wheatstone bridge Instead of feeding DC into the weatstone bridge, the audio signal is fed in. One leg of the wheats..." | Read more » about 1 month ago
alejobonifacio "Thanks for your suggestion @Ag8n, sounds very interesting to try. Anyway I have to be honest and say that I don't quite figure out how to do what y..." | Read more » about 1 month ago
Ag8n "It looks like the Coqui is a pretty well designed instrument. But, some of the pharmaceutical instruments would send the tone through a bridge. T..." | Read more » about 1 month ago
alejobonifacio "Hi @warren! Yes, 0.1-1 g/L is a useful range at least in rivers in this part of the world, in fact for this river test it worked well. I still have..." | Read more » about 1 month ago
liz "Thank you for this close and careful work <3 " | Read more » about 2 months ago
warren "Hi @alejobonifacio i wonder if there is an 'ideal' range if we can use resistors or capacitor sizes to shift that to our looked-for "search range" ..." | Read more » about 2 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 » 5 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 » 5 months ago