TIS Capillary Electrode, API 2000, QTRAP Back Catalog number: CTS-21212 Availability: In the manufacturer's stock Price on request - + Recommended PH600 pH tester with 1 point calibration, ±0.2 pH accura Price on request ORP57 ORP/Temp waterproof tester ORP57 Price on request CD610 TDS tester with ATC, range: 0 - 10000 ppm Price on request