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Milwaukee MI 180-US pH/ORP/EC/TDS/NaCl/Temperature Laboratory Bench Meter

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Specifications for this item
Number of Items
Overall Height
95  millimeters
Overall Width
160  millimeters
Measurement Type
pH , Electrical Conductivity , Salinity , Temperature , Oxidation Reduction Potential (ORP)
Part Number
MI 180-US
Brand Name
Style Name
Overall Length
230  millimeters

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Key Features

  • Benchtop meter with probe displays pH, ORP, EC, TDS, or NaCl with extended temperature range for a range of advanced laboratory testing applications
  • EC and TDS automatic ranging sets the meter to the scale with the best resolution for the sample
  • Log on demand feature allows 50 samples for each measurement range
  • pH calibration can be performed in three points selectable between seven memorized buffers for an accurate calibration curve, even with varying samples and wide differences in pH
  • Accessories include pH electrode, EC/TDS/NaCl/temperature probe, a separate temperature probe, electrode holder, 20mL each of pH 4.01, 7.01, and 10.01 calibration solution sachets, 20mL electrode cleaning solution sachet, application software, RS-232 2-meter/6.6-foot cable, graduate pipette, and instructions

Package Details

Shipping Weight: 5.75 pounds
Package Size: 13.3 x 10.2 x 4.7 inches

Product Description

The Milwaukee Mi180 benchtop meter displays pH, ORP, EC, TDS, or NaCl with temperature on a large, easy-to-read display for a range of advanced laboratory testing applications. The stability indicator prompts the user when the reading is stable. Total dissolved solids (TDS) factors can be selected from 0.40 to 0.80, as well as a range of temperature coefficients from 0.0 to 6.00%/degrees C for increased consistency and reproducibility of TDS and electrical conductivity (EC) readings. The extended temperature range is -20.0 to 120 degrees C (-4 to 248 degrees F). Choose from Automatic Temperature Compensation (ATC), Manual Temperature Compensation (MTC), or No Temperature Compensation (NOTC). All measurements can be temperature compensated at 20 or 25 degrees C.

Prompts on the meter guide the user through the calibration process for accuracy and ease of use. pH calibration is available at three points, with seven memorized buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, and 12.45) to provide an accurate calibration curve, even when samples have wide differences in pH. A user-selectable alarm can be set to alert the user when pH calibration is past due. Six memorized buffer sets are available for conductivity calibration. For measuring actual conductivity, temperature compensation can be disabled. Salinity calibration is one point (with calibration solution). Temperature calibration is two points at 0 and 50 degrees C (32 and 122 degrees F). Data from the last calibration performed for pH, conductivity, or salinity can be recalled and viewed.

Accessories included with the Mi180 benchtop meter are a pH electrode, an EC/TDS/NaCl/temperature probe, a separate temperature probe, electrode holder, pH calibration solutions, 12880 μS/cm calibration solution, 1413 μS/cm calibration solution, and one electrode cleaning solution sachet.


pH range-2.00 to 16.00 pH; -2.000 to 16.000 pH
pH accuracy+ or – 0.01 pH; 0.001 pH
EC range (auto-ranging)0.0 to 29.99μ/cm;
30.0 to 299.9μ/cm;
300 to 2,999μ/cm;
3.00 to 29.99mS/cm;
30.0 to 200.0mS/cm;
Up to 500.0mS/cm actual conductivity (the conductivity value without temperature compensation)
EC accuracy+ or – of reading (+ or – 0.05μ/cm or 1 digit, whichever is greater)
TDS (auto-ranging)0.00 to 14.99mg/L;
15.0 to 149.9mg/L;
150 to 1,499mg/L;
1.50 to 14.99g/L;
15.0 to 100.0g/L;
Up to 400.0g/L actual TDS (the TDS value without temperature compensation)
TDS accuracy+ or – 1% of reading (+ or – 0.053ppm or 1 digit, whichever is greater)
Salinity (NaCl) range0.0 to 400.0%
Salinity (NaCl) accuracy+ or – 1% of reading
Temperature range0 to 60 degrees C (32 to 140 degrees F)
Temperature accuracy+ or – 0.4 degree C
Computer interfaceRS-232, USB opto-isolated
Power supply12VDC power adapter
Weight0.9kg/2.0 lb.
Dimensions230 x 160 x 95mm/9 x 6.3 x 3.7 inches (H x W x D)

H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

A multiparameter meter is a benchtop or handheld device that can take multiple readings on a single sample. It measures parameters such as the pH level (acidity or alkalinity of a substance), conductivity (the amount of salts or other compounds present in water), dissolved oxygen (DO, the amount of oxygen in a liquid), temperature, total dissolved solids (TDS, anything present in water other than the pure water molecule and suspended solids), salinity, resistivity, and oxidation reduction potential (ORP). Applications for multiparameter meters include water testing, pharmaceuticals, agriculture, winemaking, water-treatment plants, and acquaculture. Devices with a benchtop body are often used for indoor laboratory use or in a manufacturing setting; handheld, portable devices are typically used for fieldwork. Sensors are used with a meter to measure the parameters of a substance.

Milwaukee Instruments manufactures electrochemical equipment and solutions for water analysis under the Milwaukee and Martini brands. The company, founded in 1989, is headquartered in Rocky Mount, NC.

What’s in the Box?
  • Mi180 benchtop multiparameter meter
  • MA917B/1 pH electrode
  • MA814DB/1 EC/TDS/NaCl/temperature probe
  • MA831R temperature probe
  • MA9315 electrode holder
  • M10004 pH 4.01 calibration solution sachet, 20mL
  • M10007 pH 7.01 calibration solution sachet, 20mL
  • M10010 pH 10.01 calibration solution sachet, 20mL
  • M10016 electrode cleaning solution, 20mL
  • Mi5200 application software
  • MA9350 RS-232 with 2m/6.6ft. cable
  • Graduate pipette
  • 12VDC power adapter
  • Instructions

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