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 MW101 Portable pH meter, 0.00 to 14.00pH, 2point cal. Price on request ORP57 ORP/Temp waterproof tester ORP57 Price on request MI806 Portable meter pH/EC/TDS/Temp Mi806 Price on request