pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended MI5560 pH55 (pH/Temp waterproof tester Mi5560 Price on request EC59 EC/TDS/Temp waterproof tester EC59 Price on request MI150-E pH/Temp combined bench meter Mi150-E Price on request