HI-7036L 12.41 mg/L TDS Calibration Solution, 500 mL bottle

Total Dissolved Solids (TDS) meters are vital to the water industry so accurate readings are essential. Make sure your electrode is giving accurate readings by using Hanna TDS Calibration Solution available in bottles and sachets. TDS Solutions are produced with high quality Potassium Chloride in various concentrations to NIST standards.