5
3. Reassemble electrode by gently pushing the inner
assembly into the outer body (from the bottom).
Slide the spring and upper cap down the cable and
over the top of the inner stem. Screw the upper cap
into place.
4. Unscrew and remove the fill hole plug and o-ring on
fill hole spout.
5. Select the appropriate fill solution from Table 1. Use
the dropper pipette provided to add a few drops of fill
solution to the electrode. Invert electrode to wet the o-
ring and rinse the electrolyte chamber.
6. Holding the body of the electrode gently press the
upper cap with your thumb. This permits the fill
solution to drain out of the body. Release your thumb
and verify electrode returns to its original position.
(You may need to gently assist for this to occur).
7. Tighten the upper electrode cap onto the body and fill
electrode body until the fill solution volume is just
below the fill hole.
8. Position the reference electrode with appropriate ion
selective electrode (ISE) in a Hanna HI 76404 electrode
holder (or equivalent) and connect banana plug to
the reference jack of the ISE meter.
H
I
5
3
1
5
R
E
F
E
R
E
N
C
E
