High range test kits are for pools using traditional chemical sanitizers, chlorine or bromine.
Basic pH and DPD Chlorine test kit with .75 oz. liquid reagents. Contains 2-chamber comparator, .75 oz. bottles of DPD Reagent #1, DPD Reagent #2, DPD Reagent #3, Base Demand Reagent, Acid Demand Reagent, Phenol Red, color coded instructions, and in-depth water proof chemistry guide.
Kit comes in opaque, injection molded sturdy plastic case with handle, color coded directions, and in-depth waterproof pool chemistry guide.