You need a FAS-DPD test kit to accurately measure chlorine over 5ppm. (and to really know what your CC is) See this link http://www.lesliespool.com/shopping/...ProductID=9414


It's the only FAS-DPD I saw listed... You'll still need a basic OTO kit to get the pH test or just order one separately.

Good Luck. (Ben's kit is still the easiest to use and the best value!)