Water Purity Tester, 0.0 to 99.9mS/cm Back Catalog number: HI 98308 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended ORP57 ORP/Temp waterproof tester ORP57 Price on request MI106 Combined portable meter pH/ORP/Temp Mi106 Price on request MC125 pH/ORP controller MC125 Price on request