AQUAMASTER PH-4 CALIBRATION SOLUTION 100 MLS

AQUAMASTER pH 4.01 Calibration Solution is a precision liquid standard designed for accurate pH meter calibration. This 100 ml bottle contains a traceable NIST-certified solution that ensures your pH measurements remain reliable and consistent. Perfect for laboratory, industrial, and field applications, this calibration solution helps maintain the accuracy of your pH testing equipment. Simply use as needed and close the bottle immediately after each use to preserve solution integrity. Storage is simple — keep between 15–25 °C in a cool, dry location. Do not return used liquid to the bottle. An essential tool for anyone requiring precise pH measurements and equipment maintenance.