HI70442P – 1500 mg/l (ppm) TDS@25°C – 25x20ml

Standard-TDS Calibration Solution 1382 ppm, 500 ml

Conductivity Solution 111800 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.