Milwaukee pH58 Waterproof pH/ORP/ºC/ºF Tester

Milwaukee Instruments
Water Tester
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Milwaukee pH58 Waterproof pH/ORP/ºC/ºF Tester w/ Replaceable Electrode


PH/ORP/ºC waterproof tester with automatic calibration in 2 points, range -2.00 to 16.00 pH / -5.0 to 60.0 ºC / ± 1000 mV, accuracy of ± 0.01 pH / 1 mV, Automatic Temperature Compensation. Supplied with interchangeable pH electrode Mi58P.

Combination waterproof testers with advanced functions also include the new model pH58 for simultaneous pH and ORP measurements and temperature, which is continuously displayed on the dual level LCD. It shows readings in an extended range from -2.00 to 16.00 pH or ±1000 mV and simultaneously shows temperature from -5.0 to 105.0°C or 23 to 221°F.
The pH58 has a stability indicator and hold feature that freezes the display for easy and accurate recording. The large display also has graphic symbols to guide you through all operations. Calibration is performed automatically at 1 or 2 points using standard or NIST buffers. The modular design allows easy electrode and battery replacement.

Included Accessories in the waterproof Milwaukee pH58 temp, ORP and pH meter

Ideal for aquarium water testing, lab use and hydropnic testing.

  • 1 - Protective Cap
  • 1 - Hard Carrying Case
  • 1 - 20 mL pH 4.01 sachets of calibration solution
  • 1 - 20 mL 7.01 pH sachets of calibration solution
  • 4 - 1.5V; IEC LR44, A76
  • 1 - Instruction Manual
pH Range-2.00 to 16.00 pH
mV range±1000 mV
Temp Range-5.0 to 60.0°C / 23.0 to 140.0°F
pH Resolution0.01 pH
mV Resolution1 mV
Temp Resolution0.1°C / 0.1°F
pH Accuracy±0.05 pH
mV Accuracy±2 mV
Temp Accuracy±0.5°C / ±1°F
pH Typical EMC Deviation±0.02 pH
mV Typical EMC Deviation±2 mV
Temp Typical EMC Deviation±0.3°C / ±0.6°F
pH Calibrationautomatic for pH, 1 or 2 points, from -5 to 60°C with 2 sets of memorized buffers (pH 4.01, 7.01, 10.01 or 4.01, 6.86, 9.18)
Redox Calibrationfactory calibrated
ProbeMi58P (replaceable)
Environment-5 to 50°C / 32 to 122°F; max RH 100%
Battery Type4 x 1.5V; IEC LR44, A76 (included)
Battery Lifeapprox. 250 hours of use
Auto-offafter 8 minutes of non-use
Dimensions200 × dia 38 mm
Weight100 g
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