Metrohm 797 VA Computrace - Manual (Page 166)

6 Electroplating Bath VA
797 VA Computrace – Software
154
Volume (mL) [ > 0.01 mL / var ; 0 mL ]
Addition volume. For entering variable addition
volumes, click the
button to open the EDIT
VARIED ADDITION window for the selected sub-
stance (details see Variable addition , section 5.2).
In this case, var is entered into the field instead of
a fixed value. This field only appears once for solu-
tions with the same number (mixed standards)
and it is not displayed if
0 is entered as solution
number.
Peak evaluation [ Height, Area, Derivative, Coulometric ; Coulomet-
ric ]
Selection of peak evaluation quantity:
Height
Peak height from baseline to peak maximum.
Area
Peak area between peak curve and calculated
baseline.
Derivative
Difference between positive an negative maximum
of the first derivative of the voltammogram.
Coulometric
Charge transmitted during the peak.
Smooth factor [ 1...6 ; 4 ]
Smoothing power of the Savitzky/Golay smooth-
ing of the baseline (1 = minimum smoothing, 6 =
maximum smoothing) (
see Smoothing and differ-
entiation , section 5.8 ).
Eliminate spikes
Eliminates spikes to smooth the signal.
Reverse sweep [ on, off ; off ]
Enable peak evaluation of the reverse sweep of
cyclic sweeps (not available with CPVS).
LAT Record intercept value
"LAT Record intercept value” is a Calibration technique for CVS and
CPVS. It is used to determine the "Intercept value". That "Intercept
value" is later used automatically for Brightener determination
with the
Calibration technique "LAT Standard addition for bright-
eners".
Note: If possible, “MLAT” should be the preferred Calibration
technique for Brightener determination. With “MLAT” the “Inter-
cept solution” and “Bath solution” are measured together, what
minimizes fluctuations caused by solution exchange and time dis-
placement of the measurements.