EC/TDS/Temp waterproof tester EC59 Back Catalog number: EC59 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended PH600 pH tester with 1 point calibration, ±0.2 pH accura Price on request ORP57 ORP/Temp waterproof tester ORP57 Price on request MW600 Dissolved oxygen meter MW600 Price on request