Interesting CC test result

[DavidD]

I, as well as others have noticed this before. There have been several threads on this in the past, one relatively recently. You are correct, you still have "0" CC's. I believe someone (Evan maybe?) mentioned at one time that he thought the reagent (R0871) was breaking down causing the the CC to become noticeable.

Dave

[waterbear]

The CC test should be read immediately. If you add the potasium iodide reagent and no pink color develops there is no CC. If a pink color develops titrate until the sample turns clear. It is normal for a pink color to develop on standing. Same for the DPD test (comparator). Once the third reagent is added the test needs to be read immediately. Hope this clears this up.