I have read a few threads about the time it takes for the reactions to occur when testing for FC and CC with the TF100 and similar kits. And I have observed the return of the pink color given a bit of time after the color change is complete. I wanted to be sure I understood the most proper way to test. As I currently understand, you need to complete the FC test in a minute or less. And for the CC test, you keep waiting for the pink to return until the color change holds for a minute., i.e. add drops until it is clear, wait a minute, if the pink returns, add more drops and wait again, and keep doing that until the pink does not return. Is that correct?