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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Principles, Methods, and General Applications.

Beckman series manuals here; | Hach Company/DU Questions and Answers on LabWrench

Retrieved 9 March Medicines, International Standards and the State. By using this site, you agree to the Terms of Use and Privacy Policy. Personal tools Log in Request account.

The DU was the first commercially viable scientific instrument for measuring the amount of ultraviolet light manuual by a substance. Subject to credit approval.

From classical to modern chemistry: Seeing the manuaal to build upon their existing expertise, Beckman made it a goal to create an easy-to-use integrated instrument which would both register and report specific wavelengths extending into the ultraviolet range. See all condition definitions – opens in a new window or tab Four Centuries of Achievement.

The specrophotometer icon will be blinking red and yellow. Replied to gr’s post on September 22 nd I would like to share this great online resource for anyone seeking a spectrophotometer: They determined that the enzyme phosphorylase catalyzes formation of glucose 1-phosphate, which is the beginning and ending step in the conversions of glycogen into glucose and blood glucose to glycogen.


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Spectrophotometer, DU – OpenWetWare

This model of spectrophotometer enabled scientists to easily examine and identify a given substance based on its absorption spectrumthe pattern of light absorbed at different wavelengths.

Retrieved 10 September It had a moving chart recorder to plot results, with red, green and black dots. The machine will occasionally freeze up, requiring a re-boot. Retrieved from ” https: Read more about the condition. In the s, Beckman Instruments developed the DR and the DK, both of which were double-beam ultraviolet spectrophotometers.

Spectroscopic methods for observing spectrophotomter absorption of electromagnetic radiation in the visible spectrum were known as early as the s.

Biological molecules, including proteins and nucleic acidsabsorb light energy in both the ultraviolet and visible range.

Beckman DU-640

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Spare ink cartridges and paper for the printer are kept on hand. Retrieved 6 March National Institutes of Health.

It was quickly realized that a glass dispersive prism was not suitable for use in the ultraviolet spectrum. Email to friends Share on Facebook – 6400 in a new window or tab Share on Twitter – opens in a new window or tab Share on Pinterest – opens in a new window or tab.


Beckman had previously attempted to find a source of reliable hydrogen lampsseeking better sensitivity to spectrkphotometer in the ultraviolet range than was possible with tungsten. Retrieved 6 September With the DU’s UV technology, vitamin A content of shark liver oil could be determined directly in a matter of minutes.

Spectrophotometer, DU640

This allowed the user to plot the light absorption spectrum of a substance to obtain a standardized “fingerprint” characteristic of a compound. Do not turn off the DU unless told to by your instructor. Confirm that these indicators are displaying: Have one to sell? Additional assistnace can be found using the on-screen help.

The philosophy and history of molecular biology: Kornberg used it to purify aconitasean enzyme in the citric acid cycle. If you routinely use ul Microcuvettes, you may want to have a spare on hand in case one gets chipped or broken.