Metrohm 781 pH/Ion Meter - Manual (Page 36)

3.2 Determination of an ion concentration (only 781: Conc mode)
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5 Poor calibration data
• If the calibration data lies outside certain limits
(slope ≤ 80% or ≥ 105% of the theoretical slope of 59.16 mV
(25°C) per ionic charge) or the sign of the slope does not
agree with the selected ion type a corresponding message will
be shown:
• You can still accept the calibration data with <ENTER>, or re-
ject it with <MODE>.
6 Show calibration data
• You can now display the calibration data with <CAL.DATA>.
If you move the selection bar to the end of the list with <  >,
then in the line
Curve < -> >
you can activate the calibration curve display with <->>.
7 Print calibration report
• With <REPORT> you can now output a calibration report to a
printer or a PC.
• With <CAL.DATA> you can jump directly to the short calibra-
tion report in the report selection list (calib short); this contains
all the data except the calibration curve itself.
• The Select key <->> offers the further option ' calib full ';
this also outputs the calibration curve (see Section 7.2.4).
ENTER MODE
CAL.DATA
7
REPORT
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