Metrohm 797 VA Computrace - Manual (Page 205)

6.4 Some Definitions used with CVS and CPVS
797 VA Computrace – Software
193
• Chloride potential
• Calibration factor
• Suppressor
• Brightener
• Electrolyte solution
VMS (Virgin Make-up Solution)
The VMS (Virgin Make-up Solution) is an electroplating bath solu-
tion like the one, which is analyzed. But it contains no organic ad-
ditives and it is made from reagent grade chemicals.
Note: The VMS solution should always be adjusted to the bath so-
lution as exactly as possible.
It is used in the Electroplating Bath analysis with the modes CVS
and CPVS and the
Calibration techniques “Standard addition plat-
ing bath”, “DT Record calibration curve” and “DT Suppressors with
calibration curve”.
Note: If you dilute Brightener- or Suppressor standard solution: Al-
ways take VMS solution, never water!
Intercept solution
The “Intercept solution” is VMS(Virgin Make-up Solution) + Sup-
pressor. It is used in the Electroplating Bath analysis with the mo-
des CVS and CPVS and the
Calibration techniques “MLAT Standard
addition for brighteners” and “LAT Record intercept value”.
Note: The "Intercept solution" should always be adjusted to the
bath solution as exactly as possible.
Intercept value
The “Intercept value” is the charge generated by the “Intercept so-
lution” during the stripping process in the Electroplating Bath
analysis with the modes CVS and CPVS. It is used with the
Calibra-
tion technique “LAT Standard addition for brighteners” and should
be redetermined regularly. It can be recorded with the Calibration
technique "LAT Record intercept value".