Regular electrode cleaning is one of the most impactful maintenance steps you can take to protect your investment in precision water testing equipment

Replaceable Filter — Easy filter swap keeps your bottle performing like new

Upgraded to 4 filters

Immerse Sensor: Submerge the sensor in the calibration solution

Milwaukee CD611 Digital Conductivity Pen - EC Meter for Water Quality Testing made in Canada Regular electrode cleaning is oneMilwaukee CD611 Digital Conductivity Pen Precision EC Measurement The Milwaukee CD611 Digital Conductivity Pen is a compact, portable EC (electrical conductivity) meter designed for fast, accurate water quality testing in hydroponics, pool maintenance, aquariums, food & beverage production, and water treatment applications. This handheld pen combines lab grade accuracy with field ready convenience, making it ideal for professionals and enthusiasts who