Parameter Setting Tutorial
When turned off, long press to enter parameter settings→ short press to switch P1-P2-P3→Short press
to select the parameter you want to change (parameter flicking) →short press to make changes, short press
to confirm parameter change →Long press to go back to measurement mode.
7. Technical Specifications
◆ pH probes do NOT last forever. They age through normal use and will eventually fail. The average
lifetime of a probe is 1-3 years depending how it is used and maintained. To ensure you receive a
long life from your tester, please ensure you follow the guide below.
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 test with clean water in a container or with a wash bottle.
8.2. For tough contaminants, detach the sensor shield, soak the probe in Apera’s cleaning solution (AI1166) or
detergent water for 30 minutes. Then use a soft brush to remove the contaminants. Afterwards, soak the
probe in Apera 3M KCL soaking solution (AI1107) for at least 1 hour. Rinse it off, then re-calibrate the tester
before using.
9. Probe Storage
9.1. Under regular usage (daily or weekly use), just make sure probe cap is wet, and tightly close the cap with the
red O-ring.
9.2. For long-term storage (you are not going to use the product for a while), add Apera 3M KCL soaking solution
(AI1107) or pH 4.00 buffer solution to the Fill line in the probe cap and store the probe in it. Close on the
probe cap tightly with the red O-ring.
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