pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended PH58 pH/ORP/Temp waterproof tester, -2.00 to 16.00 pH Price on request MI5559 pH55 (pH/Temp waterproof tester Mi5559 Price on request MW802 Smart pH/EC/TDS combined meter MW802 Price on request