Quote Originally Posted by Rangeball
I'll look at walmart and pick up their OTO kit if it tests CH.
It does but it has some issues....many people, including myself have found that it doesn't always work correctly...a workaround that I have found is to keep adding drops of the first reagent until you get the pink-violet color instead of a yellowish color. I have done this and cross checked with both Ben's kit and Taylor's and it is in the ballpark.