TDS tester with ATC, range: 1 - 999 ppm Back Catalog number: CD97 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MC122 pH controller MC122 Price on request MW101-SOIL MW101-E Portable pH meter MW101-SOIL Price on request MI5559 pH55 (pH/Temp waterproof tester Mi5559 Price on request