pH/Temp waterproof tester pH56 Back Catalog number: PH56 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MC110 pH monitor MC110 Price on request PH600 pH tester with 1 point calibration, ±0.2 pH accura Price on request CD600 TDS tester with ATC, range: 0 - 1990 ppm Price on request