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Navigator 500
Sodium analyzer
8 Maintenance
64
OI/ASO550–EN Rev. G
8.5.1 Preparing the sodium and reference electrodes for
storage
Referring to Fig. 8.4:
1. Unscrew (but do not remove) plastic sleeve
A
and
carefully slide sodium electrode
B
out of the flowcell
C
.
2. Fill the rubber teat
D
(supplied with the sodium
electrode) with High Cal solution or typically with 1 mg kg
-1
sodium containing a few drops of concentrated ammonia
solution and push the teat over the end of the sodium
electrode.
3. Carefully withdraw reference electrode
E
from the
flowcell.
4. Fill the rubber teat
F
(supplied with the reference
electrode) with salt bridge solution and push the teat over
the end of the reference electrode.
5. Refit the filling hole plug
G
(non-reservoir option) or
H
(reservoir option) to seal the refill aperture.
Note.
Do not let electrodes dry out.
Fig. 8.4 Preparing the sodium and reference electrodes for
storage