pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended MA955 Solenoid valve with 1.5meter cable incl. Fittings Price on request MW101 Portable pH meter, 0.00 to 14.00pH, 2point cal. Price on request HI2002-02 EDGE pH/ORP metr Price on request