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 HI2002-02 EDGE pH/ORP metr Price on request MI151 pH/ORP/Temp combined bench meter Mi151 Price on request