Digital Push-Button Calibration to any point within range

Country of Origin: Romania (Hanna Instruments manufacturing facility)

Battery life: Approx

giving you a year and a half of clean

the pH probe will no longer function

Milwaukee T75 Waterproof Low Range TDS Pen - Total Dissolved Solids Meter 0-999 ppm alkaline replacement filter Digital Push-Button Calibration to anyMilwaukee T75 Waterproof Low Range TDS Pen The Milwaukee Instruments T75 is a professional grade waterproof TDS (Total Dissolved Solids) pen designed for accurate low range measurements from 0 to 999 ppm. Built for water quality professionals, aquarium enthusiasts, hydroponics growers, and field technicians who need reliable, portable TDS testing. Key Features Low Range Precision Optimized for 0 999 ppm measurements with 2% full scale accuracy