pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended 4090010100 DPH10 Portable pH Meter(Color screen) 1.DPH10Mete 13 290,00 Kč 4090010103 DDO10 Portable DO Meter (Polarographic Type/Color 16 850,00 Kč MW600 Dissolved oxygen meter MW600 Price on request