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 PH55 pH/Temp waterproof tester, -2.0 to 16.0 pH Price on request MI106 Combined portable meter pH/ORP/Temp Mi106 Price on request MI806 Portable meter pH/EC/TDS/Temp Mi806 Price on request