Milwaukee C66 Waterproof EC Tester Pen

The Milwaukee C66 Waterproof EC Tester Pen is a reliable and rugged digital conductivity meter designed for fast, accurate measurement of electrical conductivity (EC) in water and nutrient solutions. Perfect for growers, hydroponic systems, aquariums, laboratories, and water quality monitoring, this tester offers dependable performance in both professional and home environments.

Built with a waterproof housing, the C66 is ideal for use in wet or demanding conditions without sacrificing durability. The clear, easy-to-read LCD display delivers instant EC and total dissolved solids (TDS) readings, helping you maintain optimal nutrient levels with confidence.

Featuring a stable, long-lasting probe and simple calibration process, the C66 ensures accurate measurements across a wide conductivity range. Its lightweight and portable design makes it easy to carry between testing sites, and the straightforward operation means you can get reliable results with minimal effort.

Key Features:

• Waterproof design for durability in wet conditions

• Large, easy-to-read digital LCD display

• Measures electrical conductivity (EC) and total dissolved solids (TDS)

• Wide measurement range with reliable accuracy

• Simple calibration and operation

• Compact, lightweight and portable

Whether you’re managing nutrients for plants, checking water quality, or monitoring conductivity in scientific applications, the Milwaukee C66 Waterproof EC Tester Pen delivers accurate, consistent results in a user-friendly package.