This reminds me of a question I wanted to ask.
Particularly for the CC test, how clear is clear when adding reagents? I find myself sometimes adding "one more drop" because I still see a tiny hint of colour. Should the sample be water clear, or when the majority colour shift happens?
Never mind, before someone posts the Extended Kit instructions, I just re-read them.. it says "The pink color may become extremely faint before it goes away. Make sure that the sample goes completely clear." Got it! Last CC test I did, I got a faint pink colour that went away with one drop... so 0.2 reading, I was wondering if that test was even worth it.