Ip Reject; Ip>1 (Result Indicator); Ise Calibration Results Parameters; Ise Calibration Solutions - Radiometer Analytical TitraLab 870 Reference Manual

TitraLab ®

IP reject

IP>1 (result
indicator)
ISE calibration
results
parameters
ISE calibration
solutions
The IP reject sets lower level of the slope of the titration curve for
acceptance of an inflection point. Use the IP reject value to eliminate
weak inflection points.
To set the appropriate IP reject value, display the derivative curve of
the titration and find the IP reject value as shown below:
d Potential (or d pH)/dVolume
IP reject 4
IP reject 3
IP reject 2
IP1
IP reject 1
IP reject 1: 3 Inflection points found (IP1, IP2 and IP3)
IP reject 2: 2 Inflection points found (IP2 and IP3)
IP reject 3: 1 Inflection point found (IP3)
IP reject 4: no inflection point found
Enter in:
Parameters menu of a Monotonic IP or Dynamic IP method.
Range available:
1 to 999 (unit = mV/ml or pH/ml)
Refer to "Result indicators", page
Refer to "Results menu", page
Refer to "Solution menu", page
TitraLab 870 Reference Manual
IP3
Direct curve
IP2
Derivative curve
Figure 25: IP reject
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Volume
Page 141