Hanna Instruments HI 901 - Manual (Page 58)

5-18
METHODS
Threshold:
This parameter must be set by the user in according with the analysis.
The threshold represents the absolute value of the first derivative, expressed in |mV/mL|
(absolute value), below which the detection algorithm does not search for the equivalence
point.
Range is between 1 and 9999 mV/mL.
The recommended value for the threshold is around 40% of the estimated maximum absolute
value of the first derivative.
Depending on the titration curve profile, the following guiding ranges might be used:
TITRATION CURVE PROFILE THRESHOLD |mV/mL|
FLAT 1 to 450
NORMAL 450 to 1800
STEEP 1800 to 9999