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 4090010101 DORP10 Portable ORP Meter(Color screen) 1.DORP10M 14 860,00 Kč MW301 Conductivity meter MW301 Price on request