Beckman Coulter DU-640



The Beckman DU-640 Spectrophotometer is an efficient stand alone system that comes with complementary accessories to produce accurate results. This complete UV Vis spectrophotometry unit has a CPU, monitor, keyboard, 3-button mouse and the necessary I/O ports that help keep procedures efficient. This Beckman spectrophotometer boasts of different program settings including fixed wavelength, wavelength scanning, scatter correction, net A, time-based kinetic/rate determination, subtraction/addition, and spectra manipulation.   
DU-640 spectrophotometer units have additional features to address stringent measurement requirements. This model has a graphical interface that simplifies task performance. As a result, measurement procedures are made efficient and user experience is enhanced. UV and Vis lamps used with this instrument also have power switches that work independently from that of the system.   
Featuring ease of use, this model has a three-button mouse optimized for function and parameter selection, as well as numeric and alphanumeric data. Each unit is delivered with a color flat panel monitor. External keyboards are optional for this model   
Custom-build this system to fit specific needs by adding powerful and easy-to-use application software packages. Obtain reliable and accurate results in seconds without the need for an external computer.
Depth 53 cm
Height 58 cm
Width 69 cm
Power Requirements 120 VAC 50/60 Hz 15A
Weight 20 kg
Additional Specifications Operating Temperature   
15 to +40’C   
Wavelength Range   
190-1100 nm +/- 0.2 nm   
Read Out   
-4.5 to +4.5 Abs


  • Quantitative Total Protein Analysis   
  • Nucleic Acid Determination   
  • Enzyme Mechanism   
  • Single Component Quantitative Analysis   
  • Multicomponent Analysis by Full Spectrum Quantitation (FSQT)   
  • Performance Validation
  • Photos

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    Beckman DU640 zero order

    Hi,    We have a Beckman DU640 with a zero order issue. So the wavelenght calibration does not pass.  Also, the performance test shows that the 656.1 nm is shifted to 661.5 nm wich does not help either.  The other...

    mouse curser doesn't work

    i don't know wether the port on the main board is bad or the mouse. because this is a DB9 mouse port and we don't have this old style mouse to test with.  did any one have a problem like this before? Trong

    Data output from DU 640?

    Anyone know if there is a way to read the data files from the DU 640 without an external floppy drive? If an external computer link is required through the DB25 connector, are there some simple windows10 compatible programs that can interface...

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