Apera Instruments PH60Z-WW



Trouble Reason HowtoFix
Calibration Error
Incorrect calibration
order (Er1)
Always calibrate pH 7 rst, then pH 4 or pH
10. Refer to Section 4.2.1.


(Er1)



Contaminated electrode
(Er1/Er4/Er5)
Thorougly clean off the electrode. Refer to
Section 6.
Aged electrode (Er1/
Er4/Er5)
Replace the electrode.
Dried-out electrode
(Er1/Er4/Er5)
Soak in the soaking solution overnight to
restore.
Electrode is not in full
contact with solutions
(Er1/Er4/Er5)



Air bubbles around the
sensor (Er1/Er4/Er5)
Make a quick stir in the solution to remove air
bubbles.
Pressing too fast
(Er2)
Wait for the reading to be fully stabilized
before pressing

to nish the calibration




(Er3)
Thorougly clean off the electrode. Refer to
Section 6.

(Er3)



(Er3)












Er4/Er5)
 



 

 