ACTIVE INGREDIENT:Sodium Bisulfate - 100%PRODUCT DESCRIPTION:pH Minus lowers pH level and the total alkalinity. The ideal pH range is 7.4 - 7.6. A pH in this range helps your sanitizer work effectively, and reduces corrosion, eye irritations, and skin dryness.DIRECTIONS FOR USE:1. Determine the amount needed using the chart below.2. Fill a gallon plastic bucket with water.3. Add the proper amount of pH minus and mix with a wooden spoon or plastic utensil until fully dissolved.4. Pour mixture into the entire pool. Make sure circulation system is running. CAUTION:1. DO NOT pour mixture into skimmer, or near pool lights, metal ladders, or other metal fixtures.2. DO NOT add water to the product, but add product to water.3. DO NOT add more than 32 ounces of product per 10,000 gallons at one time.4. After 4 hours, water should be retested and additional product can be added.HOW TO LOWER TOTAL ALKALINITY:Always adjust total alkalinity first, keeping between ideal range of 80 - 150 ppm.If total alkalinity is high: Add 2 lbs for every 10,000 gallons of pool water to lower 10 ppm.Keep circulation pump running and add product at deepest part of pool. Wait 4 hours before adding more product. FIRST AID:IF IN EYES–Flush eyes with water for 15 minutes, while lifting eyelids. Call a physician if irritation persists.IF ON SKIN OR CLOTHING–Brush off excess and rinse skin with water.IF INHALED–Remove yourself to fresh airIF SWALLOWED–If large amounts are swallowed, drink a large amount of water. Do not induce vomiting. Call a physician.STORAGE and DISPOSAL:Keep product dry in the original, tightly closed container when not in use. Store in a cool, dry, well ventilated area. Keep out of reach of children. Rinse empty container thoroughly with water then place in trash receptacle.