Beckman DU 65 Spectrophotometer, 200 nm - 900 nm (CAT#: STEM-SPO-0127-YJL)

Beckman DU 65 Spectrophotometer, 200 nm - 900 nm, model DU 65, is manufactured by Beckman Coulter.
The Beckman DU 65 Spectrophotometer is an instrument that combines optimized wavelength scanning with step-programmable capabilities and brings self contained versatility and productivity to the laboratory. The basic operation can be mastered in seconds with time saving features like storage of calibrations and auto-scaling of scans. With its Plug in Soft-Pacs, repeated analyses can be produced at the touch of a button with a variety of functions such as linear and non-linear calibration curves, wavelength scans, kinetic measurements, and gel-scans.

Condition: Used
Wavelength: 200 nm - 900 nm.
Scanning Speed: 500 or 750 nm/ min selectable
Stray Radiation:
Measured with a 2 sec response time
< 0.03 %T at 220 nm
< 0.02 %T at 340 nm, 370 nm.
Wavelength Accuracy: +- 0.3 nm at Deuterium peak 656.1 nm.
Reproducibility: +- 0.1 nm.
Spectral Slit Width: 2 nm.
Photometric Accuracy: +- 0.005 A at 1 A (measured with NBS 930 filters).
Reproducibility: +- 0.002 A at 1A.
Range: -3 to +3 A.
Stability: < 0.0003 A/h (at 500 nm, 1 sec response time, after warmup).
Baseline Stability: +- 0.001 A (200-900 nm at 0 A, 2 sec response time, 240 nm/min scan speed.
Noise: < 0.0003 A (at 0 A, 500 nm, 2 sec response time)

Operating Principle: Double beam spectrometer for the UV/VIS region, with microcomputer electronics, keyboard entry and vacuum fluorescence display.
Monochromator: Holographic concave grating with 1053 lines/mm.
Radiation: Prealigned Deuterium and Tungsten halogen lamps with automatic lamp switching.

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