pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended MW402 TDS meter MW402 Price on request CD611 Conductivity tester with ATC, 0 - 20000 µS/cm Price on request MI160 pH/ORP/ISE/Temp combined logging bench meter Mi16 Price on request