pH55 (pH/Temp waterproof tester Mi5559 Back Catalog number: MI5559 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended 4090010104 DDOPRO10 Portable DO Meter(Optical/Color screen) 1 1 250,15 € 4090010103 DDO10 Portable DO Meter (Polarographic Type/Color 670,65 € MC410 TDS monitor MC410 Price on request