The Apera Instruments AI1121 12.88 MS/cm (12880 µS/cm) Standard Conductivity Calibration Solution is standardized against NIST certified references at 25°C (77°F). It's ideal for the calibration of all kinds conductivity meters. Since conductivity value are affected by temperature, the temperature & conductivity reference charts are provided on the bottle labels for your reference. All the solutions are double-sealed, not subject to the DOT shipping restrictions, and have a 1-year shelf life.
