pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended CTS-21212 TIS Capillary Electrode, API 2000, QTRAP Price on request 4090010209 DPCD100 Benchtop pH/Cond/DO Meter (Polarographic 1 177,71 € MC310 Conductivity monitor MC310 Price on request