Apera Instruments PH20

6
 Storing the probe dry will NOT cause permanent damage to it. It will only temporarily
cause the probe to lose its sensitivity, which can always be restored by soaking in the
storage solution or pH4.00 calibration solution.
6. Parameter Setting
6.1 Setting Schedule
6.2 Parameter Setting
When turned off, long press to enter setup → short press to switch
P1-P2-P3→ Short press , parameter flashing→short press to choose,
short press to confirm parameter selection→Long press to go back to
measurement mode.
6.3 Parameter Setting Instruction
Select standard pH buffer solution (P1): There are two options of standard buffer
solutions: USA series and NIST series as the following chart:
Icons
pH standard buffer solution series
USA series
NIST series
Three-Point
calibration
1.68 pH and 4.00 pH
1.68 pH and 4.01 pH
7.00 pH
6.86 pH
10.01 pH and 12.45 pH
9.18 pH and 12.45 pH
Prompt
Mark
Parameter Setting Items
Code
Factory
Default
P1
Select pH buffer
USA – NIST
USA
P2
Select Temperature Unit
˚F – ˚C
˚C
P3
Back to Factory Default
No – Yes
No