PerkinElmer Lambda 25, User Manual

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Lambda 25, 35, 45 User’s Guide
42
Optics
Beam center height 15 mm above cell holder bottom
Beam cross-section 1 nm slit ca. 0.6 mm x 9 mm (width x height)
at focal point of sample and reference beam in
sample compartment
Optical pathlength in
sample compartment 121 mm
Grating (Monochromator) Holographic concave grating with 1053 lines/mm
in the center
Radiation sources Prealigned deuterium and halogen lamps
Detector Photodiodes
(One for the sample beam and one for the
reference beam)
Abscissa
Wavelength range
190 nm to 1100 nm;
0 nm for alignment purposes
Wavelength accuracy ±0.1 nm
Wavelength reproducibility ±0.1 nm
Spectral bandwidth 1 nm (fixed slit)
Lamp change Automatically at 326 nm
(software selectable over the whole
wavelength range)
Scan speeds
7.5, 15, 30 , 60, 120, 240, 480, 960,
1920 and 2880 nm/min
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