pH55 (pH/Temp waterproof tester Mi5559 Back Catalog number: MI5559 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended CD97 TDS tester with ATC, range: 1 - 999 ppm Price on request MI5560 pH55 (pH/Temp waterproof tester Mi5560 Price on request MW402 TDS meter MW402 Price on request