Milwaukee MA917B/1 Refillable Combination pH Probe

SKU: 9139-MA917B.1~ea

Milwaukee MA917B/1 Refillable Combination pH Probe

SKU: 9139-MA917B.1~ea
Regular price $197.56 CAD
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Milwaukee MA917B/1 Refillable Combination pH Probe

The MA917B/1 is a lab-grade, refillable glass electrode designed for a fast response and an extended life.

The glass body is easily cleaned and resistant to chemicals while the round design of the tip provides the largest possible surface area for faster readings.  The double-junction is designed to reduce the risk of clogging. 

The probe is refillable with MA9011 3.5 KCI, a solution that is silver-free.  Silver particles can form at the junction resulting in clogging and lead to erratic and slow readings. The ability to refill the electrolyte also extends the life of the electrode.


  • Body: Glass
  • Reference: Double, Ag/AgCl
  • Junction: Ceramic, Single
  • Electrolyte: 3.5M KCl
  • Range: 0-14 pH
  • Tip Shape: Sphere
  • Diameter: 0.5 inches
  • Dimensions: 4.7 inches / 6.4 inches
  • Operating Temperature: 68 to 104°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.
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