4 ms·
That last part is interesting to me, how would you test the nutrient solution after circulating? Would you just pay a lab to run the analysis on what's left or
by belval 5y ago
That last part is interesting to me, how would you test the nutrient solution after circulating? Would you just pay a lab to run the analysis on what's left or evaporate the solution to increase concentration and then try to precipitate the ions left in the solution and weight those?
- lathyrus_long 5y agoYou'd pay a lab about $45, same as I did for my quality control check. A few of the ions--like nitrate or ammonium--will probably get tested with some kind of color-change reaction, and quantified with a visible-light spectrophotometer. The rest will be from ICP (inductively coupled plasma), a precisely-quantified version of the same effect as where different elements make a flame turn different colors.