pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended CD600 TDS tester with ATC, range: 0 - 1990 ppm Price on request MW801 Smart pH/EC/TDS combined meter MW801 Price on request CD97 TDS tester with ATC, range: 1 - 999 ppm Price on request