JUMO 202710 Operating Instructions Manual page 21

Show slope at
25°C
After the 2-point calibration, the slope (SL.) for the entire range will be shown.
After the 3-point calibration, the slope shown first is that for the acidic range
(SL. 1). If you press the CAL key again, the slope shown will be that for the
alkaline range (SL. 2).
4 Calibrating a pH combination electrode
CAL
Briefly press the
2 3
rH mV mV pH
H
mbar
ATC ok CAL AL Logg pH
Permissible -62 to -45 mV/pH
range
Optimum -59.2 mV/pH
key again.
Slope -52.9 mV/pH
21