pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended 18901143 DEC1-S Cond sensor 33,43 € MI180 Comb log GLP pH/mV/EC/TDS/NaCl/Temp Mi180 Price on request 18901142 DORP1-S ORP sensor 52,94 €