HM Digital C1000 TDS 1000 ppm NaCl calibration solution (3oz/89ml) for TDS/EC Meters
For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges. The HM Digital C1000 TDS 1000 ppm NaCl calibration solution can be used to calibrate any brand of TDS Meter, much like how most of HM Digital's line of meters can be calibrated with other NaCl calibration solution.
