ORP meter MW500 Back Catalog number: MW500 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended PH55 pH/Temp waterproof tester, -2.0 to 16.0 pH Price on request MW402 TDS meter MW402 Price on request HI 98309 Konduktometr UPW, 0,000...1,999µS Price on request