I saw a question on here about cold brew vs hot brew caffeine content and was wondering what is the easiest (or best) way to measure this at home (if possible)
2 Answers
If you can find Ethyl Acetate (some nail polish removers), you can probably do this.
-
this is exactly the kind of hacky stack overflow answer i was looking for... since you can measure the caffeine as a solid left afterwards, you can actually compare results... or rub it on your gums.– bound008Commented Jul 21, 2010 at 2:22
-
1I wouldn't eat it. I doubt it is too pure (bicarbonate, sulfate, and impurities in NP remover), but do whatever makes you happy. Commented Jul 21, 2010 at 2:32
-
2The experiment you link to doesn't mention ethyl acetate. It does however require dichloromethane, sodium sulfate, and a fume hood, which you may or may not have lying around the house. Commented Jan 16, 2015 at 1:47
I don't think anything short of HPLC or extraction and purification will give you a precise result. If you'd be ok with more of a rough idea of whether something has a lot or a little caffeine, there are test strips available.
-
I've done simpler extractions than that... I'll have to find the procedure. Commented Jul 19, 2010 at 11:00
-
-
2Test strips are not available anymore. Starbucks probably made sure of that.– user28649Commented Oct 13, 2014 at 0:12