Originally Posted by RW
I read somewhere that Coke does a great job.
Coke should work just fine. It's pretty acidic...if you read the ingredients, you'll find phosphoric acid in it.
according to the USP (which gives the standards for pharmaceuticals and ingredients), phosphoric acid "has a pleasantly acidic taste when diluted sufficiently."
and I always remember the first thing hearing/teaching in a lab class was not to smell or taste your chemicals.