Apex Classic Setup and Programming Guide v2.2
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8.
Use the up/down arrow keys to select the High Calibration Solution used,
push Select.
9.
Dry the High Calibration Solution packet off and carefully open the corner
of the low solution, just enough to get the pH probe inserted in the packet.
10.
Remove the pH probe from the Low Calibration Solution, rinse it in
probe storage solution (or tap water), gently shake the excess solution off
the probe, and place the probe in the High Calibration Solution. Periodically
swirl the probe in the solution to ensure an accurate reading. Ensure the
probe is submerged in calibration solution at all times.
11.
Wait for the high reading to stop changing. This may take a few
minutes up to 5 minutes depending on the type and condition of pH probe
being calibrated. The value of the reading while calibrating may not match
the value of the solution being used, this is normal. Once the reading has
stabilized, press Select or OK.
12.
The Apex system will use the calibration measurements to calibrate
the pH probe.
13.
The calibration fluid can be used to calibrate more than one probe
however the pH calibration should be discarded after use as they will
degrade over time after opening.
If the calibration measurements were not accurate or were out of range, the
calibration may fail which will be indicated on the Apex Display. In this case, the
default calibration settings will be used. You can attempt the calibration
procedure again, however this usually indicates that the pH probe is too far out of
range and should be replaced.
PH PROBE MAINTENANCE
pH probes should be periodically cleaned and recalibrated for best performance.
It is not recommended to clean the probes unless calibration is to be performed.
The period between cleanings is up to the user but typically every 1-3 months is
normal. To clean the probe, gently brush the sides and tip of the probe with a
soft brush to remove any debris. Rinse the probe in tap water. Soaking the probe
in acid (vinegar) or alkali (borax) solution to remove mineral deposits is not
typically needed but can be used to try and bring back an old probe that cannot
be calibrated. Typical lifespan for a pH probe in aquarium use is 12-24 months.
ORP PROBE SETUP
The Apex Base Module has a port that can use used to measure ORP, the Apex
Lite Base Module does not include an ORP port. The port on Probe Module 1 can
be configured to read ORP or pH. The ORP port on the Apex Base Module can be
reconfigured as a second pH port if needed. Setup and configuration of the ORP
