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Rev. 1.0 31/01/2020
P1.1 Selection of pH buffers
• Access this setup to select the buffer family for performing the electrode calibration.
• Calibration lines from 1 to 3 points can be made.
During calibration, press to exit and save the points calibrated up to that moment (see calibration
paragraph).
The instrument automatically recognizes 2 families of buffers (USA and NIST); in addition, the user has the
option of performing a manual calibration up to 2 points with customizable values.
USA Buffers: 1,68 - 4,01 - 7,00** - 10,01 - 12,45 (Factory setting)
NIST Buffers: 1,68 - 4,00 - 6,86** - 9,18 - 12,46
**Neutral point always requested as first
In measure mode at the bottom left of the display, a series of beakers
indicates the buffers with which the last automatic and manual
calibration was carried out.
P1.2 Resolution
Access this menu to choose the resolution needed when reading the
pH parameter:
• 0.1
• 0.01 -default-
P1.3 Stability criteria in pH measurement
To consider the reading of a value truthful, we recommend waiting for the measurement stability, indicated
by the icon . When the measurement is not stable, four red flashing bands appear on the display.
Access this menu to change the measurement stability criterion:
“LOW”: choose this option to bring up the stability icon even in conditions of poor stability.
Readings included within 1.2 mV.
“MEDIUM” (default value): readings included within 0.6 mV.
“HIGH”: choose this option to display the stability icon only in conditions of high measurement stability,
readings within 0.3 mV.
P1.6 pH calibration data
Access this menu to view (select “VIEW”) or print (select “PRINT”) information on the last calibration
performed:
• VIEW: The following screens will scroll automatically on the display:
• First screen: CALIBRATION DATE and TIME and beakers indicating the buffers used.
< 6.5
6.5 ~ 7.5
> 6.5
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