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Milwaukee MW12 Digital Phosphate Tester

SKU: 9139-MW12~ea

SKU: 9139-MW12~ea

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Milwaukee MW12 Digital Phosphate Tester

The Milwaukee MW12 Phosphate Photometer offers easy digital testing with no more hit and miss testing with strips.  This meter is great for aquariums, aquaculture & coral, labs, water treatment, classrooms and more.  Simply add the reagent and get a digital reading accurate to ±0.04 ppm within minutes. 


  • Fast, easy-to-read results with large digital LCD readout
  • Range from 0.00 to 2.50 ppm
  • Accurate to ±0.04 ppm or ±4% of reading @ 25 °C
  • Small and ergonomic design
  • No calibration needed
  • Reliable and repeatable measurements with no visual assessment
  • Adaptation of the Standard Methods for the Examination of Wastewater 20th edition
  • Runs on 1 x AAA battery with auto shut off to extend battery life


  • Range: 0.00 to 2.50 ppm
  • Resolution: 0.01 ppm
  • Accuracy: ±0.04 ppm or ±4% of reading @ 25 °C
  • Typical EMC Dev: ±0.01 ppm
  • Light Source: Light Emitting Diode @ 525 nm
  • Light Detector: Silicon Photocell
  • Method: Adaptation of Standard Methods for the examination of wastewater 20th edition Ascorbic Acid Method. The reaction between Phosphate and the reagent causes a blue tint in the sample
  • Environment: 0 to 50°C (32 to 122 °F) max. 95% RH non-condensing
  • Battery Type: 1 x 1.5V AAA
  • Auto-shut off: After 2 minutes of non-use
  • Meter Dimensions: 3.2 x 2.4 x 1.5 inches (81.30 x 61 x 38.1 mm)
  • Meter Weight: 0.14 lbs. (0.18 kg)
  • Packaged Dimensions: 4.53 x 4.53 x 3.31 inches (115 x 115 x 84 mm)
  • Packaged Weight: 0.4 lbs, (0.18 kg)

Milwaukee MW12 Manual