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Press the key below the calibrate to zero absorbance
or standard icon, this will open another menu with the
option to re-calibrate to zero absorbance or to calibrate
to the previously entered standard value. Press the key
adjacent to the calibrate to standard icon.
If the standard selected requires a factor beyond the range of the instrument the check standard icon
will be displayed.
The instrument will take a reading and calibrate to the
standard concentration. Once the calibration is
complete the sample can be measured using the
measure to standard icon.
6.3.2
Calibrating to a Factor
Insert a cuvette containing the blank solution into the
sample chamber and close the instrument lid. Press the
key below the calibrate to zero absorbance icon. The
instrument will calibrate to zero absorbance. Once the
calibration is complete the sample can be measured
using the measure to factor icon.
6.4
SAMPLE MEASUREMENT
It is not possible to perform sample measurements before the instrument has been calibrated at the
selected wavelength. In this operating mode the type of sample measurement performed depends on
the calibration which has been carried out.
6.4.1
Measuring a Sample After Calibrating to a Standard
Remove the cuvette containing the standard sample
and place a cuvette containing the sample to be
measured in the sample chamber. Close the instrument
lid and press the key below the measure to standard
icon. Once the measurement is complete the
concentration and absorbance values are displayed.
Summary of Contents for 7300
Page 1: ...Operating Manual 730 005 REV D 08 14 Model 7300 and 7305 Spectrophotometer...
Page 2: ...2...
Page 56: ...56 SECTION 11 Declaration of Conformity...
Page 57: ...57...
