1) Prior to use, what should be done to a pH meter?

2) What should be used to calibrate a pH meter?

3) What is the first step in using a pH meter?

4) How should electrodes of a pH meter be stored in order to prevent them from being dried out?

5) The second step in the use of a pH meter involves rinsing the electrode with what?

6) What pH standard should be used first when calibrating the pH meter?

7) What pH standard should be used second when calibrating the pH meter?

8) After the pH meter is calibrated with the third standard, what should be done to the electrode?

9) Why should pH meters be calibrated each time they are used?

10) After the calibration is complete, the pH of an unknown sample or samples can be measured. What should be done to the electrode after all samples have been measured?