Test Kit 4 in 1 Blue - Chlorine - Pentair Rainbow

Tests for Chlorine, pH, Acid Demand, and Total Alkalinity Reagents are 1/2 and 1 ounce bottles Reagents: 1 ounce bottles of OTO No. 1 and No. 2, 3 and 1/2 ounce bottles of No. 4 and 5 Instructions for All-In-One 4-Way Test (pH Test) 1. Fill large vial to solid line.2. Add 1 drop solution #4 (2 drops if Chlorine test is above 1.5 ppm) and mix by swirling.3. Add 5 drops solution #2 and mix by swirling and compare test to pH color standards.4. If reading is above 7.8, perform Acid Demand Test #3 using this same water sample. Test and adjust total alkalinity (if needed) before adjusting pH.