PH Sensor


Table of contents

  1. Summary
  2. Maintenance
    1. Cleaning
    2. Reconditioning
  3. Calibration
  4. Notes
  5. JSON
  6. TBD


The Atlas pH (potential of Hydrogen) probe measures the hydrogen ion activity in a liquid. At the tip of a pH probe is a glass membrane. This glass membrane permits hydrogen ions from the liquid being measured to defuse into the outer layer of the glass, while larger ions remain in the solution. The difference in the concentration of hydrogen ions (outside the probe vs. inside the probe) creates a VERY small current. This current is proportional to the concentration of hydrogen ions in the liquid being measured.

More Info

Name: pH Kit


Calibration: Calibrated against buffer solutions provided in the kit

Type: Analog

Operational Range: -55 to 99 degrees C

Unit: N/A

Range: 1 to 14

Maintenance: ~1 year

Life Expenctancy: 2.5 years



Soft coatings can be removed with stiring the probe in water or rinsing with a squeeze bottle. Harder coatings can be cleaned by stiring the probe in a light bleach solution.


Reconditioning is required when the probe has been stored incorrectly or when the probe has dried out. The manufactuer recommends their pH probe reconditioning kit


There is no set schedule for recalibration. If the probe is being used in an environment with weak levels of acids and bases, the best practice is to recallibrate every 6 months. If the prove is being used in an environment with strong acids and bases, the best practice is to recallibrate monthly.

Note: the calibration solution is no long suitable after 20 minutes and needs to be disposed of.


When placing probe in water, gently tap the sensor to ensure there are no air bubbles trapped in the prob


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