HandyLab 100 Operation
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ba77062d02 12/2017
4.4.5 pH calibration
Why calibrate? pH electrodes age. This changes the zero point (asymmetry) and slope
of the pH electrode. As a result, an inexact measured value is dis-
Calibration / One
point calibration
Yes
No
Quick calibration with 1
buffer
Calibration / Calibra-
tion interval
1 ... 999 d Calibration interval for the
pH electrode (in days).
The meter reminds you to
calibrate regularly by the
flashing sensor symbol in
the measuring screen.
Calibration / Unit for
slope
mV/pH
%
Unit of the slope.
The % display refers to the
Nernst slope of -59.2 mV/
pH (100 x determined
slope/Nernst slope).
Man. temperature -25 ... +130 °C Entry of the manually
determined temperature.
For measurements without
temperature sensor only.
Temperature unit °C
°F
Temperature unit,
degrees Celsius or
degrees Fahrenheit.
All temperature values are
displayed with the
selected unit.
Resolution pH 0.001
0.01
0.1
Resolution of the pH dis-
play:
Resolution mV 0.1
1
Resolution of the mV dis-
play:
Stability control On / Off Switches on or off the
automatic stability control
during measurement (see
section 4.3.3)
Reset - Resets all sensor settings
to the delivery condition
(see section 4.6.1).
Menu item Possible
setting
Explanation
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