Hanna Marine Master Waterproof Wireless Multiparameter Photometer - HI97115C

‌ No warm up time needed before taking a measurement. Tutorial mode for easy step-by-step instructions. CAL CheckTM for performance verification and calibration. No warm up time needed before taking a measurement. Tutorial mode for easy step-by-step instructions. CAL CheckTM for performance verification and calibration.You may also like HANNA Instruments HI98311 DiST5 EC-TDS-Temperature Tester.