The Milwaukee CD611 conductivity tester is designed for users who need fast, accurate, and reliable measurements of electrical conductivity (EC) for a wide range of applications. Whether you are growing hydroponics and optimizing nutrient solutions, monitoring water quality as an aquarist, or teaching basic chemistry concepts, the CD611 provides a user-friendly solution with professional performance.
With its compact, lightweight design and simple manual one-point calibration, the CD611 is ideal for quick field testing and everyday use. Its accuracy of ±2% of full scale makes it a reliable tool for both professionals and hobbyists.
The CD611 delivers dependable results at an affordable price, allowing you to confidently monitor conductivity levels—helping protect your plants, aquatic life, equipment, and processes with ease.

TECHNICAL SPECIFICATIONS

• Range: 0 to 20,000 µS/cm
• Resolution: 100 µS/cm
• Accuracy: ±2% of full scale
• Temperature compensation: automatic from 5 to 50°C, with ß=2%/°C
• Calibration: manual, 1-point via trimmer
• Environment: 0 to 50 °C / 32 to 122 °F; max. relative humidity 100%
• Battery type: 4 x 1.5 V alkaline (included)