pH/ORP/Temp waterproof tester, -2.00 to 16.00 pH Back Catalog number: PH58 Manufacturer: MILWAUKEE ELECTRONICS Availability: 3 weeks Price on request - + Recommended ORP57 ORP/Temp waterproof tester ORP57 Price on request MW402 TDS meter MW402 Price on request HI9126 Přenosný pH/ORP metr Hanna Instruments Price on request