Metrohm Vision – Diagnostics - Manual (Page 44)

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Vision displays the wavelength regions for test.
For Number of Replicates, retain the default
setting of 1, unless using the SmartProbe, in
which case 4 replicates should be used.
Click on “OK”.
Vision will begin to take an instrument reference
scan, if the instrument is operating in Reference
Standardized mode.
The red progress bar at the bottom of the screen indicates status. If operating in Reference
Standardized mode, Vision requests the 99% standard from the set. If not operating in Reference
Standardized mode, Vision requests the 80% standard, which is used in place of the internal
instrument reference.
Select the requested standard from the set.
Labels on the back of each standard identify the
reflectance value.
When the 99% standard has been scanned, the
result will be plotted as shown.
In this picture, the upper and lower spectra are
tolerances from the initial IPV Setup spectrum.
The IPV Setup spectrum is the dark spectrum in
the middle, displayed in black on screen.
The lighter spectrum in the middle (red on screen) is the current spectrum. It should be within the
upper (blue) and lower (green) spectra as shown.
After each standard is run, Vision plots the comparison for each wavelength area as shown.
Tolerances are automatically applied, and a “Pass” or “Fail” indication is given. Continue to follow the
on-screen prompts for each standard. Vision requests the 40%, 20%, 10%, and 2% standards.