Apera pH Calibration Kit (pH 4/7)

Ensure accurate pH readings with GroStar by Apera's pH calibration kit. This kit includes two 8 oz. calibration solutions in pH 4.0 and pH 7.0, providing high accuracy within 0.01 pH at 25˚C. With a 1-year shelf life and NIST certified pH references, this kit is essential for proper calibration of pH meters.