Lambda 20/Lambda 40 Installation and Maintenance Guide - VTP UP

Lambda 20, Lambda 40 UV/Vis SpectrometersOpticsBeam center height15 mm above cell holder bottomBeam cross-section 1 mm slit ca. 0.6 mm x 9 mm (width x height)2 mm slit ca. 1 mm x 9 mm (width x height), atfocal point of sample and referencebeam in sample compartmentOptical pathlength insample compartmentGrating (Monochromator)Radiation sourcesDetector121 mmHolographic concave grating with 1053 lines/mmin the centerPrealigned deuterium and halogen lampsPhotodiodes(One for the sample beam and one for thereference beam)AbscissaWavelength rangeWavelength accuracyWavelength reproducibilitySpectral bandwidthLamp change190 n to 1100 nm;0 nm for alignment purposes±0.3 nm±0.1 nm1 nm or 2 nm (fixed slit)Automatically at 326 nm(selectable over the whole wavelengthrange, see Super User FactoryConfiguration)Scan speeds 7.5, 15, 30 , 60, 120, 240, 480, 960,1920 and 2880 nm/min84