pH/Temp waterproof tester, -2.0 to 16.0 pH Back Catalog number: PH55 Manufacturer: MILWAUKEE ELECTRONICS Availability: 3 weeks Price on request - + Recommended 18901142 DORP1-S ORP sensor 53,35 € 18901144 DPC1-S Combined pH/Cond sensor 57,36 € 4090010101 DORP10 Portable ORP Meter(Color screen) 1.DORP10M 596,87 €