Used to calibrate pH meters accurately across various laboratory and industrial applications. Ensures reliable and consistent pH measurements in quality control, environmental monitoring, pharmaceutical production, and research settings. Commonly used in water treatment, food and beverage testing, and clinical laboratories where precise pH values are critical. Available in standard pH values such as 4.01, 7.00, and 10.01 to cover acidic, neutral, and basic ranges. Helps maintain compliance with regulatory standards by providing traceable and stable reference points.