Digital. Simple. Compact.

The Milwaukee Conductivity Pen is designed for hydroponic and other growers. This pen helps to make sure plants are receiving the right amount of nutrient. Keeping EC in the target range helps to achieve better results.

Design Features

• Measures microSiemens (µS/cm) direct
• Ideal range for hydroponics (0 to 19,900 µS/cm)
• Units in µS/cm are easily convertible to (ppm)
• Simple one-point calibration
• Factory calibrated with the ability to recalibrate if needed
• Automatic Temp. Compensation (ATC)
• Battery life of approx. 300 hours of continuous use

What People are Saying 

Easy to Use and Carry!

Works Great. I would buy again!

Care and Use

Maintenance

EC electrodes can develop nutrient build up over time. To miminize build up, always rinse the probe in fresh tap water after every use.

Converting EC to TDS

The Milwaukee EC Pen, 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, true PPM can only be determined through chemical analysis.

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

2,000 µS/cm = 2.0 mS/cm = 1000 ppm on .50 factor scale
2,000 µS/cm = 2.0 mS/cm = 1400 ppm on the 442 scale or .70 factor scale

Thank you for considering Milwaukee to help you take your results to the next level.