The Model 440 UV-Visible Spectrophotometer
Model 440 UV-Visible Spectrophotometer with a Universal Optics Bench Sampling Accessory
The 440 Series Spectrophotometers have become the industry leader for high performance UV-Vis spectroscopy. Analytical performance and long term stability closely matches those of double beam instruments costing twice as much. The Model 430 is based on our popular Model 440 platform but only contains a tungsten lamp for the visible wavelength range between 350 nm and 980 nm.
The Model 440 incorporates high sensitivity, low drift making it ideal for low light applications including fluorescence and reflectance measurements.
Performance Specifications
Wavelength Range ................................................190 nm - 980 nm
Spectral Bandwidth ...............................................1.0 nm
Photometric Range .............................................. 0.002 -3.2 AU
Photometric Accuracy .......................................... 0.005 AU
Baseline Stability ................................................. <0.005 AU/hour
Stray Light.............................................................. <0.02%
Typical Speed ...................................................... 1 spectra/sec
General Specifications
Size......................................................................9 x 13 x 5.5 (inches)
Power.................................................................110/220 VAC, 0.8A
System Detector.............................................. 3,648 element linear CCD
Grating............................................................... Holographic grating
Mechanicals......................................................Internal mechanical shutter for automatic dark signal correction
Light Sources...................................................Deuterium and Tungsten sources with optical feedback for improved stability
Display Modes ................................................Absorption, % Transmittance, % Reflectance and Intensity
Storage..............................................................Disk or hard drive in .SIS, .XLS, and .TXT formats
Analysis Packages......................................... Quantitative Analysis, Time Acquisitions, Kinetics, Peak Find,
...........................................................................Multiple Spectra, Radiometry and Colorimetry
Approvals.........................................................Safety agency certificaitons include UL and CSA