ORP meter MW500 Back Catalog number: MW500 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 MW804 pH/EC/TDS/Temp tester MW804 Price on request MI190 Comb logging with GLP DO/Temp bench meter Mi190 Price on request