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Milwaukee MI805 Professional Portable pH/EC/TDS/Temperature Meter | Cambridge Environmental

SKU: 9139-MI805~ea

SKU: 9139-MI805~ea

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The Mi805 portable, 4 in 1 temperature meter is perfect for countless field applications -  water testing, aquaculture, pharmaceuticals, wastewater treatment plants, fish farms, wine-making, agricultural and environmental studies.

This meter measures levels of alkalinity, acidity, temperature, salts and other alloys found in water, dissolved oxygen or solids, salinity, resistivity, and oxidation reduction potential on an easily read display .  Sensors are used with the meter to measure the parameters of a substance. Conductivity has automatic one-point calibration. After eight minutes of inactivity, meter automatically turns off.  


  • Rapid, precise readings
  • Hold Function freezes readings for convenient, specific record-keeping
  • Automatic Temperature Compensation
  • pH calibration - automatic one-point or two-point
  • EC calibration
  • Temperature can be set to present in centigrade or Fahrenheit
  • Automatic buffer recognition
  • Takes several readings on single sample
  • Readings are reproducible

Mi805 includes the following:  

  • Mi805 Portable pH/EC/TDS/Temperature meter
  • MA851D/1 pH/EC/TDS/Temp amplified probe with 1 meter/3.3ft. cable
  • 2x20 mL each of pH 4.01 and pH 7.01 sachets of calibration solution
  • 2x20 mL of 1413 µS/cm sachets of calibration solutions
  • 2x20 mL sachet of electrode cleaning solutions
  • Rugged carrying case
  • 9V battery
  • Instructions


pH Range 0.00 to 14.00 pH
EC Range 0 to 3999 µS/cm
TDS Range 0 to 1999 ppm
Temp Range 0.0 to 60.0°C / 32.0 to 140.0°F
pH Resolution 0.01 pH
EC Resolution 1 µS/cm
TDS Resolution 1 ppm
Temp Resolution 0.1°C / 0.1°F
pH Accuracy ±0.01pH
EC/TDS Accuracy ±2% Full Scale
Temp Accuracy ±0.5°C / ±1°F
pH Typical EMC Deviation ±0.02 pH
EC/TDS Typical EMC Deviation ±2% Full Scale
Temp Typical EMC Deviation ±0.5°C / ±1°F
Temperature Compensation automatic from 0 to 60°C;
with ß adj. from 0.0 to 2.4%/°C
pH Calibration automatic, 1 or 2-point
with automatic buffer recognition
EC Calibration automatic, 1 point
EC/TDS Conversion Factor adj. from 0.45 to 1.00
Probe MA851D/1 amplified pH/EC/TDS/Temperature probe with DIN connector and 1 m cable (included)


0 to 50°C / 32 to 122°F; max RH 95%

Battery Type

1 x 9V (included)

Battery Life

approx. 150 hours of use


after 8 minutes of non-use


200 × 85 × 50 mm


260 g

    Download(s) Available: MI805-806 Literature
    Download(s) Available: MI805 Manual