HI70442L – 1500 mg/L (ppm) TDS @25°C – 500ml

Conductivity Solution 1413 µS/cm for Calibration, 500 ml

TDS (total dissolved substances) solution 1382 mg / L (ppm) for calibration with certificate of analysis. Individual portions - convenient & always fresh & no contamination risk.

Calibration Solution 12880 µS/cm for Calibration, 500 ml