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 HI 98103 pH tester CHECKER Price on request MI151 pH/ORP/Temp combined bench meter Mi151 Price on request MW401 TDS meter MW401 Price on request