pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended 4090010006 DEC1 Pocket Cond Tester 1.DEC1Meter (battery pre- 107,86 € 4090010208 DCD100 Benchtop Cond/DO Meter (Polarographic Type 999,80 € CD97 TDS tester with ATC, range: 1 - 999 ppm Price on request