Description: The DU Series Spectrophotometer is a microprocessor- controlled spectrophotometer intended for use in quantitative and qualitative biological. The Beckman DU Spectrophotometer is an efficient stand alone system that comes with complementary accessories to produce accurate results. Beckman DU UV/Vis Scanning Spectrophotometer. This refurbished DU Spectrophotometer unit; PDF Manual; Mouse; Power cord.

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Spectrophotometer, DU640

Processes could involve techniques for chemical reactionsprecipitationsfiltrations and dissolutions. Chemical technology 1st English ed. It yielded more accurate results than previous methods for determining the chemical composition of a complex substance, and substantially reduced the time needed for an accurate analysis from weeks or hours to minutes. Watch list is full. Request a Quote Secure the stage by tightening the screw knobs. This amount is subject to change until you make payment.

Proceed with your determinations, do not attempt transferring data to the computer until completing the steps outlined below. Science in the twentieth century.

There is a shipping surcharge to items shipped to Alaska, Hawaii and Puerto Rico. Watsondiscussing his findings with them.

Existing instruments such as the Cenco “Spectrophotelometer” and the Coleman Model DM Spectrophotometer could not be effectively used to examine wavelengths in the ultraviolet range.

Learn More – opens in a new window or tab Any international shipping is paid in part to Pitney Bowes Inc. Views Read Edit View history. Sometimes referred to as a UV—Vis spectrophotometer because it measured both the ultraviolet UV and visible spectra, the DU spectrophotometer is credited as being a truly revolutionary technology.


Spectrophotomfter from a prototype to production of the Model D involved challenges. The user could also switch between phototubes without removing the sample holder. We sell both new and used items.

This is the small red bar graph icon. Showing 1 – 24 of 29 Items. A classical wet laboratory contained a spectrophtometer variety of complicated apparatus. Infrared spectrophotometers were better suited than UV—Vis spectrophotometers to the analysis of C 4 hydrocarbonsparticularly for applications in petroleum refining and gasoline beckmman. Unit powers upitem has not been tested further by us due to expertise. This set the pattern for all of Beckman’s later quartz prism instruments.

The desired wavelength of light is selected by rotating the Wavelength Selector which adjusts the position of the prism. This allowed the user to plot the light absorption spectrum manuwl a substance to obtain a standardized “fingerprint” characteristic of a compound. Proceedings of the National Academy of Sciences.

Beckman DU | Labx

The systems comes with a spectrophtometer VGA flat panel color monitor. Kayewho developed it by modifying the DU to expand its range into the near-infrared. News Edition of the American Chemical Society. The A, B, and C prototype models all coupled an external Beckman pH meter to the optical component to obtain readouts.

Seeing the potential to build upon their existing expertise, Beckman made it beckan goal to create an easy-to-use integrated instrument which would both register and report specific wavelengths extending into the ultraviolet range. Spectophotometer strive to earn a 5 star feedback from you. I reserve the right to reject item after inspection i. Shipping rate provided is for all 48 contiguous states, unless stated otherwise. Determining quantitative concentrations of those components in the sample involved further steps.


You must give the file an unique name. Brown states that it “revolutionized the measurement of light signals from samples”. Beckman DU The DU Series is a microprocessor controlled spectrophhotometer intended for use in quantitative and qualitative biological research and industrial procedures that require spectrophotomic measurements in the UV-visible region of the electromagnetic spectrum.

Beckman DU-640

A small number of Model D instruments were sold, beginning in Julybefore it was superseded by the DU. The mechanism was highly sensitive and required a skilled operator. However, they had the advantage of being readily available because they were used as automobile headlamps.

Add to watch list. If you routinely use ul Majual, you may want to have a spare on hand in case spectropyotometer gets chipped or broken. Journal of Experimental Medicine.

The DR incorporated a “robot operator” which would reset the knobs on the DU to complete a sequence of measurements at different wavelengths, just like a human operator would to generate results for a full spectrum.

The last DU spectrophotometer was produced on July 6, Freight – Check the item description or contact the seller for details.

The entrance mirror deflects the light through the entrance slit and into the monochromator to the collimating mirror. It is all built in! Large, high optical quality quartz suitable for creating prisms was difficult to obtain. The DU spectrophotometer differs in that it claims to be useful from to millimicrons, [36]: