Sper Scientific 850037 Large Display Conductivity Pen - Manual (Page 55)

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21
Error code
FigA FigB FigC FigD
t
Many air bubbles adhered!
To reduce the air bubbles, stir the
electrode completely and better to
dip the electrode into solution at
oblique angle. To dip the electrode
at vertical angle is easy to create
many air bubbles.
After soaking the electrode in
solution for 15~30 minutes, inspect
the electrode carefully to make sure
no bubbles adhere. If air bubbles
still exist, tap the bottom of the
container gently and stir the electrode
to remove the air bubbles. If above
method are not working, remove
the electrode out of solution and
blow at the electrode to remove the
air bubbles.
To remove the air bubbles:
1. Stir the probe.
2. Dip the probe into the solution at
an oblique angle (at a slant, not
perpendicular to solution). Dipping
the probe perpendicularly will cause
air bubbles to form.
3. Soak the probe in solution for 15-30
minutes. Inspect the probe carefully for
air bubbles.
4. If air bubbles remain on the probe, tap
the bottom of the container gently and
stir the probe.
5. If the preceding methods fail, remove
the probe from the solution and blow on
the probe to remove the air bubbles.