JasonLion said:Yes, CC really does go to zero. There are a couple of possibilities as to why why yours is never zero. You might not be doing the test quite right, the final drop to clear the pink should bring the sample to completely clear. Sometimes the sample goes to a very light pink that is almost clear and if you miss that drop CC will test as 0.5. Your FC level might be too low. You might be adding something to the water that forms CC, as some sequestrants do. You might have unusually high levels of pollen forming CC. You might have a low level of extremely persistent CC that will only be cleared out by shocking.
Jason,
I apologize for hijacking...It's so interesting you bring this up because it happened to me...In this case if the sample goes to a very light pink, and you add 1 drop to make it clear, would your CC = .5 or is that considered 0?
Thanks!