Radiometer Analytical TitraLab 870, Reference Manual

Page: 182 / 286

Titra Lab ® TitraLab 870 Reference Manual
Page 182
Proportional
band This is the pH (mV) span prior to the end point, at which the titrant
speed will be reduced. The speed will increasingly reduce as the end
point is approached.
For titrations where the slope of the curve is high near the end point,
the proportional band setting should be large. If overshooting of the
end point frequently occurs, increase the
Proportional band
or decrease the Max. speed setting. A high value for the Pro-
portional band will result in slow titrations.
Enter in:
Edit method > Parameters menu (end point method)
Edit reagent > Calibration parameters menu (end point method)
Range available:
-9.000 pH to +23.000 pH or -2000.0 mV to +2000.0 mV
QC (result
indicator) Refer to "Result indicators", page 206 .
QC analysis
required This message is displayed at the start of a method requiring a QC
sample.
Press
✓
and run a QC analysis.
End point no. n
Maximum
speed
Minimum
speed
Titrant delivery speed
mV or pH