VWR P4 - Page 16

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Important information Before verifying the performance, the instrument needs to be
preheated for 30 minutes, and then re-measure dark current.
Verifying Wavelength Accuracy and Wavelength Repeatability
Select Tab Wavelength accuracy in the Performance verification interface.
Standard Sample:
Holmium oxide solution or equivalent filter
Measurement:
1. Remove something in the measurement channel, close the sample
chamber cover, press the wavelength value, type in the wavelength
of measurement, press the button Zero;
2. Put the Standard Sample in the measurement channel, press the
button Measure;
3. Repeat step 2 to do measurement three times. The difference
between the average of the three measurements and the standard
value is the single-point wavelength tolerance. The difference
between the maximum and minimum values of the three
measurements is single point wavelength repeatability;
4. Repeat step 1-3 to do measurement single-point wavelength
tolerance one by one. The maximum value in the single-point
wavelength tolerance is wavelength accuracy. The maximum value
in the single-point wavelength reproducibility is wavelength
repeatability.
Verifying Photometric Accuracy and Photometric Repeatability
Select Tab Photometric accuracy in the Performance verification interface.
Standard Sample:
NIST 930D or equivalent filter
Measurement:
1. Remove something in the measurement channel, close the sample
chamber cover, press the wavelength value, type in the wavelength
of measurement, press the button Zero;
2. Put the Standard Sample in the measurement channel, press the
button Measure;
3. Repeat step 2 to do measurement three times. The difference
between the average of the three measurements and the standard
value is the single-point photometric tolerance. The difference
between the maximum and minimum values of the three
measurements is single point photometric repeatability;
4. Repeat step 1-3 to do measurement single-point photometric
tolerance one by one. The maximum value in the single-point
photometric tolerance is photometric accuracy. The maximum value
in the single-point photometric reproducibility is photometric
repeatability.