User Guide

7
INITIAL PROBE PREPARATION
PROBE PREPARATION
All probes shipped from Hanna Instruments
are dry. To hydrate the probe and prepare it
for use, connect it to the meter and proceed
as follows.
1 Remove the red and black
plastic cap. This cap is for
shipping purposes and can
be thrown away.
2 Wet the sensor by soak-
ing the bottom 2½ cm (1")
of the probe in electrolyte
(HI 7041S) for 5 minutes.
3 Rinse the supllied mem-
brane (HI 76407A) with
electrolyte while shaking it
gently. Refill with clean
electrolyte.
4 Gently tap the sides of the
membrane with your finger
tip to ensure that no air
bubbles remain trapped. To
avoid damaging the mem-
brane, do not tap the mem-
brane directly on the bot-
tom.
5 Make sure that the rubber O-ring sits prop-
erly inside the membrane cap.
6 With the sensor facing down, screw the
cap clockwise. Some electrolyte will over-
flow.
When not in use, place the
protective cap supplied in the
kit with the meter.
Shipping
cap
black
red