Milwaukee CD611 Digital Conductivity Pen (EC)
Milwaukee CD611 Digital Conductivity Pen (EC) – Compact & Accurate Hydroponic EC Meter
The Milwaukee CD611 Digital Conductivity Pen is a simple, compact, and reliable tool designed for hydroponic growers and gardeners who need accurate nutrient measurements. By keeping EC (electrical conductivity) in the correct range, you can ensure your plants receive the right amount of nutrients for healthier growth and better yields.
With its easy-to-use design, one-point calibration, and automatic temperature compensation, the Milwaukee CD611 is a trusted choice for hobbyists and professionals alike.
Key Features
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Measurement Range: 0 to 19,900 µS/cm (ideal for hydroponics)
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Accuracy: ±2% Full Scale
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Automatic Temperature Compensation (ATC): Ensures accurate readings in varying environments
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Calibration: Simple one-point calibration (factory calibrated; re-calibration possible with M10030B or MA9060 solution)
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Units: Reads in µS/cm, easily convertible to ppm (TDS)
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Battery Life: ~300 hours of continuous use
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Design: Digital, compact, and easy to carry
Care & Maintenance
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Always rinse the probe with fresh tap water after use to minimize nutrient build-up.
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Store in a dry place when not in use.
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Re-calibrate occasionally for best results using standard calibration solutions.
Converting EC to TDS
While EC is an absolute measurement of conductivity, it is often converted to TDS (ppm). Conversion factors vary:
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500 Scale (.50 factor): 2.0 mS/cm = 1000 ppm
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442 Scale (.70 factor): 2.0 mS/cm = 1400 ppm
Note: True ppm can only be determined through chemical analysis.
Why Choose Milwaukee CD611?
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Precision-designed for hydroponic growers.
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Compact and portable for quick spot checks.
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Reliable, accurate, and budget-friendly solution for nutrient monitoring.