pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended 4090010108 DPO10 Portable pH/ORP Meter(Color screen) 1.DPO10 640,89 € CD610 TDS tester with ATC, range: 0 - 10000 ppm Price on request MW401 TDS meter MW401 Price on request