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Milwaukee MA919B/1 Refillable Combination pH Probe for the MI456 Mini Titrator

SKU: 9139-MA919B.1~ea

SKU: 9139-MA919B.1~ea

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Milwaukee MA919B/1 Refillable Combination pH Probe for the MI456 Mini Titrator

The MA919B/1 probe is designed for use with the Milwaukee MI456 Total Acidity Mini Titrators Meters.

The glass body is ideal for use in wine applications because it is easily cleaned and gives fast results.  The double junction means that virtually no silver from the reference cell is mixed with the sample; this reduces the risks of clogging.

The probe is refillable with MA9011 3.5M KCl fill solution.  With a refillable pH electrode, best results are achieved if the fill cap is removed to create a higher flow rate; this results in a faster and more stable reading.   


  • Body: Glass
  • Reference:  Double, Ag/AgCl
  • Junction: Ceramic, single
  • Electrolyte: KCl 3.5M
  • 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.