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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Refund will be processed within 7 business days through PayPal upon arrival of merchandise. You are now ready to transfer data. Report item – opens in a new window or tab. From Wikipedia, the free encyclopedia. The British Pharmacopoeia, to Forensic Views of the Body”.


Image not available Photos not available for this variation. Retrieved 6 September The machine will occasionally freeze up, requiring a re-boot. Determining quantitative concentrations of spectophotometer components in the sample involved further steps.

Kornberg and Bernard L. Retrieved 9 September Missouri City, Texas, United States. Click on the file name and you will be prompted to enter a new name. There is a shipping surcharge to items shipped to Alaska, Hawaii and Puerto Rico.

DU Date Transfer Procedure

The systems comes with a inch VGA flat panel color monitor. Light falling on the collimating mirror is rendered parallel and reflected to the beeckman prism where it undergoes refraction. Enter your desired wavelength and say OK. Back to home page. This includes items that are defective in ways that render them difficult to use, items that require service specctrophotometer repair, or items missing essential components.


I would like to share this great online resource for anyone seeking a spectrophotometer: They determined their extinction coefficients, establishing a basis for quantitative measurements in reactions involving nucleotides.

Spectrophotometer, DU640

Tungsten lamps were useful in the visible light range but gave poor coverage in the ultraviolet range. Select your measurement mode from the menu at the top of the screen. Email to friends Share on Facebook – opens 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 Add to watch list. A white light source would emit light at multiple wavelengths over a range of frequencies.

DU spectrophotometer

Beckman had previously attempted to find a source of reliable hydrogen lampsseeking better sensitivity to wavelengths in the ultraviolet range than was possible with tungsten. Spectroscopic techniques were rarely taught in chemistry classes and were unfamiliar to most practicing chemists.

It used a linear shuttle with four positions, and a superstructure to change the knobs. For questions about using the LabWrench web site please call us.

The current gain is amplified and registered on the null meter. I reserve the right to reject item after inspection i. Links on landing page go to full documents. The orientation of the stage is critical! Retrieved 29 August You should be aware that this section is for Beckman DU series spectrophotometers, not Spectra-Physics units.


Freight – Check the item description or contact the seller for details. We sell both new and used items. Beckman DU The DU Series is a microprocessor controlled spectrophotometer 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. It was accurate in both the visible and ultraviolet ranges.

In Krige, John; Pestre, Dominique. The slit mechanism was continuously adjustable from. Items are shipped within two business days after payment is received.

Remove your samples from the area when you have finished using the machine. I do not warranty or provide calibration of any type unless otherwise stated. This enables the ratio, transmittanceto be obtained.

Confirm that these indicators are displaying: For convience I’ve combined these into a single, text-searchable file: 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.