pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended CD601 Conductivity tester with atc, 0 - 1990 µs/cm Price on request 4090010005 DORP1 Pocket ORP Tester 1.DORP1Meter (battery pre 133,25 € 4090010213 DPCD100T Benchtop pH/Cond/DO Meter (Touch screen/P 1 984,97 €