pH55 (pH/Temp waterproof tester Mi5559 Back Catalog number: MI5559 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MI106 Combined portable meter pH/ORP/Temp Mi106 Price on request MI105 Portable meter Mi105 Price on request CD97 TDS tester with ATC, range: 1 - 999 ppm Price on request