16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), Plus 3M KCL Storage Solution and CalBox
by Apera Instruments
- 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 kinds of pH meters, Color-coded, double-sealed, 1-Year shelf life. Expiration Date and temperature/pH reference chart provided for reference, Apera’s unique cal box included, No more mess for your meter’s calibration