Poolmaster 22272 5-Way Test Kit with DPD Tablets and Case - Premier Collection For maintaining proper water chemistry Tests for Chlorine, Bromine, pH, Acid Demand, and Total Alkalinity Includes a rapid dissolve #1 DPD tablets for Free Chlorine test and 1oz. solutions of #2 and #3 and 1/2oz. solutions of #4 - #5 Clear-view round test block with integrated color chips for accurate color matching plus Bromine scale for testing Bromine treated water (Note: #2 Phenol Red is not the same as Phenol Red - DO NOT interchange) #2 Phenol Red is for use with 5-Way Test Kits and Phenol Red is for use with 2 or 3-Way Test Kits Comes complete with polyethylene case