Kemtek Muriatic Acid for swimming pools is a perfect choice to help keep your pH levels balanced. Over time pH levels will fluctuate due to the weather contaminants from swimmers and debris. Pool owners need to keep pH in a specific range of 7.2 to 7.8 to keep swimmers comfortable. This muriatic acid is a great choice and many professionals prefer muriatic acid over other pH adjusters on the market. No mixing required - simply follow the dosage directions to quickly adjust the pH of your swimming pool. To determine your pool s pH purchase a swimming pool test kit. The two main options are test strips or liquid kits. Both options test pH as pH and chlorine are arguable the most important levels to track in your pool. Apply and store as directed. To avoid injury be sure to wear appropriate personal protection equipment when handling pool chemicals such as this muriatic acid.