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Most users are familiar with the use of standard 1 cm cuvettes for sample analysis. The 400 Series UV/Vis spectrophotometers extend their capabilities to the use of dip probes for facilitating analysis while lending themselves to real-time monitoring of kinetic reactions.


The 440 UV/Vis Spectrophotometer includes a 12V external lamp output as well as an external shutter output. This makes the Model 440 perfectly suited for radiometry and emission analysis of external sources and also for fluorescence analysis.

Model 440 UV/Visible Spectrophotometer

S.I. Photonics continues to dominate UV-Vis spectroscopy with the revolutionary design of the 400 Series UV-Vis Spectrophotometers. High sensitivity, low noise charge coupled device (CCD) detectors provide the ability to acquire a full spectrum in the time it takes scanning UV-Vis spectrophotometers to acquire a single wavelength.

UV/Vis Spectrophotometer The 400 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.

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
Approvals..........................................................Safety agencies certifications include UL, CSA
System Detector.............................................. 3,648 element linear CCD
Grating............................................................... Holographic grating
Mechanicals......................................................Internal mechanical shutter for automatic dark signal correction
Light Sources................................................... Deuterium & Tungsten lamp with optical stability control
Display Modes ................................................ Absorption, % Transmittance, % Reflectance and Intensity
Storage.............................................................. Disk or hard drive in .SIS, .XLS, and .TXT formats
Analysis Packages......................................... Quantitative, Time Acquisition, Kinetics, Colorimetry

Software Features

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, Radiometry and Colorimetry