Milwaukee EC40 EC/TDS Nutrient Stick

SKU: 9139-EC40~ea

Milwaukee EC40 EC/TDS Nutrient Stick

SKU: 9139-EC40~ea
Regular price $142.81 CAD
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Milwaukee EC40 EC/TDS Nutrient Stick

The Milwaukee EC/TDS Nutrient Stick: Your Key to Thriving Plants and Bountiful Harvests!

Are you a hydroponics enthusiast, a dedicated horticulturist, or an ambitious agriculturist? If so, we have a game-changing solution for you! The Milwaukee EC/TDS Nutrient Stick is specifically designed to ensure your vegetables and plants receive the precise amount of nutrients they need for robust growth while minimizing product waste. Say goodbye to subpar yields and say hello to healthier, flourishing plants!

Our nutrient stick measures electrical conductivity (EC) and total dissolved solids (TDS) with automatic temperature compensation. This means you can trust that the readings are precise, regardless of any temperature variations in your environment.

Hydroponic enthusiasts take note! The Milwaukee EC/TDS Nutrient stick operates in the perfect range of 0.2 to 4 mS/cm, 2 to 40 CF, and 140 to 2800 ppm on the 0.7 scale (100 to 2000 ppm on the 0.5 scale). No more guesswork – we provide accurate measurements directly in mS/cm, CF, and PPM, eliminating the need for conversions!

Say goodbye to the hassle of continuous calibration. Our nutrient stick comes factory-calibrated, ensuring accuracy right out of the box. Plus, with its automatic on/off feature, you'll save battery life and extend its usage for up to three years, based on approximately 10 daily measurements.

No more squinting or struggling to read measurements! The Milwaukee EC/TDS Nutrient Stick has a vibrant blue LED display, making it easy to read your results, even in low-light conditions. Its robust design features a graphite electrode in an ABC + PC body, providing durability that will withstand the rigours of daily use.

We understand your time is valuable, so we've designed our nutrient stick with easy maintenance in mind. Simply rinse the EC/TDS electrodes with fresh tap or DI water after each use to minimize nutrient build-up and ensure consistent accuracy.

Unlike other conductivity sticks that require cumbersome conversions, the Milwaukee EC40 meter offers direct EC/TDS/CF readings. This means you'll get instant and straightforward measurements, saving you time and effort.

Great news for our Canadian customers – the Milwaukee EC/TDS Nutrient Stick is stocked and readily available in Canada. No need to wait or deal with lengthy shipping times or customs and duty charges! 

Don't settle for mediocre growth and disappointing harvests. Upgrade your hydroponics, horticulture, or agriculture setup with the Milwaukee EC/TDS Nutrient Stick today, and witness the incredible difference it can make. Achieve precision, efficiency, and healthier plant growth like never before. Order now and take your cultivation to the next level!


  • Measures conductivity (EC) and total dissolved solids (TDS) with automatic temperature compensation
  • Ideal range for Hydroponics (0.2 to 4 mS/cm | 2 to 40 CF | 140 to 2800 ppm 0.7 scale | 100 to 2000 ppm 0.5 scale)
  • Units directly in mS/cm/CF/PPM (no conversions required)
  • Factory calibrated; no continuous calibration required
  • High accuracy
  • Automatic Temperature Compensation (ATC)
  • Auto on/off feature
  • Blue LED display
  • Graphite electrode in ABC + PC body
  • Battery level indicators
  • Battery life up to 3 years with approx. 10 measurements per day
  • 3 X 1.5V AA (batteries included)


  • Range: 0.2 to 4 mS/cm
  • Range: 2 to 40 CF
  • Range: 140 to 2800 ppm 0.7 scale
  • Range: 100 to 2000 ppm 0.5 scale
  • Resolution: 0.1 mS/cm
  • Resolution: 1 CF
  • Resolution: 70 ppm (factor: 700 ppm = 1 mS/cm)
  • Resolution: 50 ppm (factor: 500 ppm = 1 mS/cm)
  • Accuracy: ±4% of reading, ± 1 resolution point
  • Calibration: Factory calibration (no additional calibration required)
  • Probe: Graphite electrode in ABC + PC body
  • Temperature Compensation: Automatic from 5 to 50°C (41 to 122°F)
  • Battery Type: 3 x 1.5V AA (included)
  • Battery Life: Approx. 3 years @ 10 tests per day
  • Measurement Display: 20 blue LEDs bar
  • Environment: 0 to 50°C / 32 to 122°F; max RH 95%
  • Dimensions: 17" inches in length (420 mm) / 30 mm diameter (1.2")
  • Weight: 9 ounces (255 g)
  • Casing Protection: IP67, floating

Milwaukee EC40 Manual



EC/TDS electrodes can develop nutrient build up over time. To minimize build up, always rinse the probe in fresh tap or DI water after every use.


The Milwaukee EC40 meter, like all conductivity meters, provides a measure of electrically charged ions in a solution and is an absolute measure of conductivity.

EC is often converted to TDS in parts per million (ppm). Different scales include the 500 scale, 650 scale and the 700 scale. However, the EC40 has all the readings direct EC/TDS/CF.  

Your uS/cm reading can be approximately converted to TDS (ppm) as shown in the examples below.

1 uS/cm = 0.5 ppm on a .5 factor scale 
1 uS/cm = 0.7 ppm on a .70 factor scale (442)

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