7
8
Probe Cleaning
8.1
The tester is only as accurate as the probe is clean. Always thoroughly rinse off the
probe before and after each measurement with clean water in a container or with a
wash bottle.
8.2
For tough
contaminants, remove the sensor shield, soak the probe in Apera’s cleaning
solution or detergent water for 30 minutes. Then use a soft brush to remove the
contaminants. Afterwards, soak the probe in 3M KCL soaking solution for 1 hour. Rinse
it off, then re-calibrate the tester before using again.
9
Probe Storage
9.1
Under regular usage (daily or weekly use), make sure there are several
drops 3M KCL soaking solution in the probe cap, and tightly close the cap
with the O-ring.
9.2
For long-term storage (you are not going to use the product for more than a
month), add 3M KCL soaking solution to the Fill line in the cap and store
the probe in it. Close the probe cap tightly with the O-ring.
If you find white crystals inside or outside the probe cap, it is perfectly normal. It is
the 3M KCL soaking solution that crystalizes over time by its nature. Just rinse them
off and add in new soaking solution. This chemical is not poisonous nor dangerous,
and the probe’s performance will not be affected at all.
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