Milwaukee T75 TDS - Waterproof Parts Per Million ( PPM ) Tester

Milwaukee Instruments T75 TDS - Waterproof Parts Per Million ( PPM ) Tester, Automatic Temperature Compensation, 1 Point Manual Calibration, & includes 1500 ppm starter calibration package, Range: 0 to 1999 ppm (mg/L), Replacement Probe Model is MA73075 ( T 75 )