Intensity Test - Agilent Technologies 1220 Infinity II LC User Manual

Evaluating the VWD Holmium Oxide Test
The test is evaluated by the instrument, and the measured maxima are
displayed automatically. The test fails if one or more of the maxima lies
outside the limits.
Table 38
Absorbance Maxima
360.8 nm
418.5 nm
536.4 nm

Intensity Test

VWD Intensity Test Description
The Intensity Test measures the intensity of the UV lamp over the full VWD
wavelength range (190 – 800 nm). The test evaluates the results automatically,
and provides an intensity spectrum. The test evaluates the highest intensity,
average intensity, and lowest intensity across the full wavelength range. The
test is used to determine the performance of the lamp and optics (see also cell
test). To eliminate effects due to absorbing solvents, the test should be done
with water in the flow cell. The shape of the intensity spectrum is primarily
dependent on the lamp and grating. Therefore, intensity spectra will differ
slightly between instruments. On completion of the test, the intensity
spectrum and intensity values are displayed.
page 162)
The test should not be performed using the micro flow cell, since the reduction in light
N O T E
intensity will cause the test to fail.
1220 Infinity II LC System User Manual
Limits
Limits
-1 to +1 nm
-1 to +1 nm
-1 to +1 nm
Test Functions and Calibration
Variable Wavelength Detector (VWD)
("VWD Cell Test Description"
9
on
165