Care and Use
Maintenance
TDS/PPM electrodes can develop nutrient buildup over time. To minimize build-up, always rinse the probe in fresh tap or DI water after every use.
Converting TDS to EC
The Milwaukee TDS Pen, like all TDS meters, provides a measure of Total Dissolved Solids (ppm) reading, of contaminates per unit of volume in a solution.
TDS/PPM is often converted to uS/cm. Different scales include the 500 scales, 650 scales, and 700 scales.
Your TDS/PPM readings can be approximately converted to uS/cm as shown in the examples below.
- 1 ppm = 2 uS/cm on the 0.5 factor scale
- 1 ppm = 1.43 µS/cm on the 442 scale or .70 factor scale