100
Advanced Operations
Option 2:
1. Insert the blank cuvette/cell into the cuvette/sample cell holder.
Press Zero.
2. Insert the samplecuvette/cell into the cuvette/sample cell
holder. Press Read.
•The newly plotted wavelength scan curves are shown in
black.
•The absorbance or transmittance value and the associated
wavelength are highlighted in black.
3. Press Options and then Reference: Off in the Options menu
to select another scan to display on the same screen with the
current scan. Highlight the required scan number and press
Highlight Reference.
Note: After selecting a reference scan the Reference: Off key in the
Options menu turns into Reference: On.
Note: Only scans that have the same wavelength range and step can
be displayed using the overlay option. A reference curve can only be
displayed with another active curve. Two previously stored scans
cannot be overlaid.
4. The reference curve is shown in gray. The absorbance or
transmittance value and the associated wavelength are
highlighted in gray.
•Additionally the difference of the extinction and/or
transmission value between the two Scans (measured
Scan and reference Scan) is indicated/highlighted at each
position of the cursor.
Note: A black and an gray box are shown in the left corner of the
display. The gray box relates to the reference scan and the black one
relates to the current wavelength scan.
5. Press the black or gray small box in the left upper corner on the
screen to switch between the actual wavelength scan and
reference scan.