pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended 4090010209 DPCD100 Benchtop pH/Cond/DO Meter (Polarographic 29 590,00 Kč 18901142 DORP1-S ORP sensor 1 330,00 Kč MI151 pH/ORP/Temp combined bench meter Mi151 Price on request