GroStar pH Calibration Kit (pH 4/7, 8 oz. each)

What's Included: (1) pH 4.0 calibration solution, 8 oz. (1) pH 7.0 calibration solution, 8 oz.  Details: A pair of essential solutions for calibrating pH measuring equipment must be cleaned and calibrated regularly to ensure accurate readings High accuracy (0. 01 pH): standardized against NIST Certified pH references within 0. 01 pH at 25˚C (77˚F) Ideal for the calibration of all pH meters Color-coded, double-sealed, 1-year shelf life Expiration date and temperature/pH reference chart provided for reference Calibration Solution should be stored in a cool place out of direct sun and heat Download MSDS