pH/Temp waterproof tester, -2.0 to 16.0 pH Back Catalog number: PH55 Manufacturer: MILWAUKEE ELECTRONICS Availability: 3 weeks Price on request - + Recommended CD600 TDS tester with ATC, range: 0 - 1990 ppm Price on request MI5560 pH55 (pH/Temp waterproof tester Mi5560 Price on request PH56 pH/Temp waterproof tester pH56 Price on request