4.2 Performance Check
4 - 14
4.2.6 Baseline Flatness
[Summary]
To determine a systematic variation range* of absorbance values
measured in a specified wavelength region with no sample in the
sample compartment.
* The systematic variation means a variation having certain
reproducibility, not including noises or other non-reproducible
fluctuation.
[Procedure]
2. Choose [Edit] - [Condition setting], then, set conditions as
follows:
‹General tab›
Measurement mode
Wavelength scan
Apply sample table
OFF
‹Instruemnt tab›
Data mode
Abs
Start wavelength (nm)
950
End wavelength (nm)
200
Scan speed (nm/min)
400
Response
Medium
Baseline correction
User 1
Initial waiting time (s)
0
AutoZero before measuring
OFF
Light source switching
Automatic
Switching wavelength (nm)
340.0
Number of measuring times
1
Cell length (mm)
10
‹Monitor tab›
Open data processing window
after measurement
ON
Open data processing window
after measurement with
spectrum superimposed
OFF
Automatic printing
on measuring end
OFF
Display spectrum on the screen
with superimposed
OFF
2. Choose [Edit] - [Sample name/Comment]. Enter, as the
sample name, “Baseline flatness”; then, enter the file name.
3. Choose [Spectrophotometer] - [Baseline measuring], and select
“User 1”. Click OK button. (User baseline measurement
starts.)
4. On completion of the baseline measurement, click the
measuring button (
). (Measurement starts.)
