This Salinity Calibration Standard Solution is essential for calibrating the PockeTester® to measure salinity levels in pool water. This solution provides a known salinity standard of 3000 ppm, ensuring the accuracy of your readings. Each 500 mL bottle is designed specifically for use with the PockeTester®, helping to maintain consistent and reliable salinity measurements. By ensuring precise calibration, this solution supports effective water chemistry management and enhances overall pool maintenance.