User Guide

29
For refillable electrodes:
If the fill solution (electrolyte) is less than 1
cm (½") below the fill hole, add HI7082 or
HI8082 3,5M KCl Electrolyte Solution for
double junction or HI7071 or HI8071 3,5M
KCl+AgCl Electrolyte Solution for single
junction electrodes.
For a faster response unscrew the fill hole
screw during measurements.
For AmpHel
®
electrodes:
If the electrode does not respond to pH
changes, the battery is run down and the
electrode should be replaced.
MEASUREMENT
Rinse the electrode tip with distilled water.
Immerse the tip (4 cm /1½") in the sample
and stir gently for approx. 30 seconds.
For a faster response and to avoid cross
contamination of the samples, rinse the elec-
trode tip with a few drops of the solution to be
tested, before taking measurements.
STORAGE
To minimize clogging and assure a quick
response time, the glass bulb and the junc-
tion should be kept moist and not allowed to
dry out.
Replace solution in the protective cap with a
few drops of HI70300 or HI 80300 Storage
Solution or, in its absence, Filling Solution
(HI7071 or HI8071 for single junction or
HI7082 or HI8082 for double junction elec-
trodes).
Follow the Preparation Procedure above be-
fore taking measurements.
Note: NEVER STORE THE ELECTRODE
DRY OR IN DISTILLED WATER.
AmpHel
®
is a registered Trademark of "Hanna Instruments"