User Guide

Instruction Manual pH 510/ Ion 510
21
6.3 Electrode Cleaning
pH electrodes that are mechanically intact and not in use for a short period of time can be restored to normal
performance by one or a combination of following procedures:
a) Salt deposits
Dissolve the salt deposits by immersing the electrode in a container filled with some tap water for ten to fifteen
minutes. Then thoroughly rinse with de-ionized water.
b) Oil / Grease Films
Wash the pH electrode bulb in mild detergent and water. Rinse electrode tip with de-ionized water.
c) Clogged Reference Junction
Heat a dilute 1% KCl solution to 60-80
o
C. Place the sensing portion of the pH electrode into heated KCl
solution for approximately 10 minutes (as shown above). Care must be taken when performing this procedure.
Allow electrode to cool while immersing in some unheated KCl solution. (Heating time confirmed at 10 minutes
on our side, pls take note)
d) Protein Deposits
Use Protein Cleaning Solution (EC-DPC-BT/ 00653-06) to remove any protein that is deposited onto pH
electrode. Allow the electrode to stand in this solution for five to ten minutes.