ORP meter MW500 Back Catalog number: MW500 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MW803 pH/EC/TDS/Temp tester MW803 Price on request CTS-21102 APCI Capillary Electrode, API 4000, API 5000, 4500 Price on request MW150 pH/ORP/Temp Bench Meter, -2.00-20.00 pH, ±2000.0mV, -20.0-120.0 °C Price on request