6 Bottle Refill Solution Pack for Premium 5-Way Swimming Pool & Spa Test Kit - pH Chlorine Bromine Alkalinity, Acid Demand Indicators

6 Bottle refill indicator solution pack for a U.S Pool Supply Professional 5-Way Water Test Kit (Part# USP TK-505). Solutions only, 5-way test kit not included. 6 different types of indicator solutions in 1/2 ounce dropper bottles. Contains OTO (Orthotolidine) Chlorine Test Solution, Phenol Red pH Test Solution, Acid Demand and 3 types of Total Alkalinity Solutions. Indicator chemicals are used for maintaining proper Chlorine, Bromine, pH, Alkalinity, and Acid Demand chemical levels in swimming pools and spas. Using these solutions along with the test kit will make it easier for you to maintain your pool waters chemical levels, so the water is properly balanced and safe to enjoy and swim in year-round!