Use of pH Meter 

  1. Remove electrode from storage buffer
  2. Remove grey rubber plug from top of electrode
  3. CAREFULLY remove orange guard from bottom of electrode
  4. CAREFULLY rinse shaft and tip of electrode with ddH2O from squeeze bottle
  5. CAREFULLY dry shaft of electrode with a Kimwipe
  6. CAREFULLY dry the tip of the electrode by touching with a kimwipe and letting it absorb the water (the glass bulbs at the tip are very fragile and the electrode is very EXPENSIVE)

Calibration: Choose two standards to calibrate, One below and one above the desired pH of your solution.

  1. swirl the lower pH standard jar and submerge the tip in the buffer. AVOID TOUCHING THE BOTTOM OF THE JAR!!!
  2. Press the "cal" button. There will be a 1 in the bottom right corner of the digital display.
  3. Press "read". The display will read the pH of the standard you’ve used, ex. 7.00
  4. Repeat steps 4-6 above.
  5. repeat steps 1-3 of calibration section with the higher pH standard.

Measuring pH:

  1. Clean and dry electrode and submerge in sample to be tested.
  2. Press "read". Display shows pH.

When you’re done: