pH tester pHep® 4 Back Catalog number: HI98127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended CD611 Conductivity tester with ATC, 0 - 20000 µS/cm Price on request HI 98309 Konduktometr UPW, 0,000...1,999µS Price on request CD601 Conductivity tester with atc, 0 - 1990 µs/cm Price on request