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 CD611 Conductivity tester with ATC, 0 - 20000 µS/cm Price on request C65 Waterproof conductivity tester, 0 to 1999 μS/cm Price on request