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Milwaukee SE220 Lab Grade Double Junction pH Probe

SKU: 9139-SE220~ea

SKU: 9139-SE220~ea

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Milwaukee SE220 Lab Grade Double Junction pH Probe

The SE220 probe is designed for use with the Milwaukee MW101 and MW102 PRO pH Meters.  It makes pH testing easy and requires very little maintenance. 

The resin body is highly durable, chemically resistant, and protects against accidental damage.  The double junction design reduces risk of clogging while the gel filled feature removes the need to maintain electrolyte levels.


  • Body: Resin
  • Reference: Double, Ag/AgCl
  • Junction: Ceramic, Single
  • Electrolyte: Gel
  • Range: 0-14 pH
  • Tip Shape: Sphere
  • Diameter: 0.5 inches
  • Dimensions: 4.7 inches / 6.4 inches
  • Operating Temperature: -5 to 70°C (23 to 158°F)
  • Cable length: 3.3 feet
  • Connection: BNC


Properly maintaining the pH probe will provide fast, accurate results for longer.  Here are tips to keep the probe working properly:

  1. Always store with the cap full of buffer or storage solution, not water.
  2. Clean the probe regularly by soaking it in cleaning solution.
  3. Calibrate after cleaning and/or storage before testing to adjust for changes in the pH probe sensor.
  4. Gently stir the probe in the sample for a faster result.