Milwaukee CD610 Digital High Range TDS Pen

SKU: 9139-CD610~ea

Milwaukee CD610 Digital High Range TDS Pen

SKU: 9139-CD610~ea
Regular price $49.25 CAD
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Milwaukee CD610 Digital High Range TDS Pen

The Milwaukee CD610 Total Dissolved Solids High Range (PPM) Pen is designed for aquariums, pools, education and many other applications. The CD610 helps make sure that fish tank water keeps clean and healthy. It is also a cost-effective tool for teacher's science labs. 


  • Measures Total Dissolved Solids (PPM) direct and with automatic temperature compensation
  • Ideal range for aquariums and pools (0 to 10000 ppm)
  • Units in ppm easily convertible to uS/cm
  • Factory calibrated with the ability to recalibrate if needed
  • Automatic Temperature Compensation (ATC)
  • 350 hours continuous use (4 x 1.5V batteries included)
  • Simple one-point calibration


  • Range: 0 to 10000 ppm
  • Resolution: 100 ppm
  • Accuracy@20°C (68°F): ±2% full Scale
  • Typical EMC Deviation: ±2% full Scale
  • Calibration: Manual, at 1 point through trimmer
  • Temperature Compensation: Automatic from 5 to 50°C (41 to 122°F), with ß=2%/°C
  • Environment: 0 to 50°C / 32 to 122°F; max RH 100%
  • Battery Type: 4 x 1.5V Alkaline (included)
  • Battery Life: Approx. 350 hours of continuous use
  • Calibration Solution: M10038B (25 sachets 20 mL ea.)
  • Dimensions: 6 x 1.2 x 0.95 inches (180 x 65 x 32 mm)
  • Weight: 3.5 ounces (0.99 g) 

Milwaukee CD610 Manual



EEC/PPM electrodes can develop nutrient buildup over time. To minimize buildup, always rinse the probe in fresh tap or DI water after every use.


The Milwaukee TDS/PPM Pen, like all TDS meters, provides a reading measured in parts per million of contaminates per unit of volume in a solution.

TDS/PPM is often converted to uS/cm. Different scales include the 500 scale, 650 scale and the 700 scale. 

Your TDS/PPM reading 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

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