Spectrometry and Spectroscopy

Universal Measurement Spectrophotometer (UMS) – Agilent Technologies Cary 7000 UV-VIS-NIR

Agilent Cary 7000 Universal Measurement Spectrophotometer (UMS).

Agilent Cary 7000 Universal Measurement Spectrophotometer (UMS)

The Cary 7000 Universal Measurement Spectrophotometer (UMS) is an all-encompassing device used for reflection, transmission, and absorption measurements from the near IR range all the way to UV. With the Cary 7000 computer interface, this device is easy to use, while maintaining functionality. The Cary 7000 UMS system is composed of a conventional Cary 5000 spectrophotometer unit and a UMA accessory unit.

Features

  • Measurement modes:
    • Abs mode – display data in absorbance units, up to 10 Abs range
    • %T mode – display the photometric value in percent transmission mode, direct transmission (180°) and variable angle transmission from 0° to 180° in 0.02° intervals
    • %R mode – display the photometric value in percent reflectance mode, used in Diffuse Reflectance on rough sample surface, independent sample rotation (360°) and detector positioning (10°–350°) at 0.02° internals
    • Absolute %R mode – display the collected data as the square root of the %R value, used in Specular Reflectance on a smooth sample surface, variable angle from 5° to 85° in 0.02° intervals
  • 2 Monochromators: double out-of-plane Littrow monochromator
  • 2 Gratings: 70 x 45 mm
    • UV-Vis: Ruled line diffraction grating, 1200 l/mm blazed at 250 nm
    • NIR: Ruled line diffraction grating, 300 l/mm blazed at 1192 nm
  • 3 Detectors:
    • On Cary 5000 unit: R928 PMT (UV-Vis), Cooled PbSmart PbS (NIR)
    • On UMA unit: two-colored Si/InGaAs detector (UV-Vis and NIR)
  • 2 Light sources:
    • Deuterium lamp: 190 – 350 nm
    • Halogen lamp: 350 – 3300 nm
    • * A third light source of mercury lamp is also installed but only used for Performance Test during maintenance
  • Beam splitting system: Rotating beam splitter, measure a sample, dark and reference signal per cycle with a speed of 30 Hz
  • Auto-polarizer: p and s polarization 
  • Cary 5000 unit wavelength range (nm):
    • 175 nm – 3300 nm
    • N2 purge required below 185 nm
  • UMA unit wavelength range (nm):
    • Without auto-polarizer: 190 – 2800 nm
    • With auto-polarizer: 250 – 2500 nm
  • Wavelength changeovers:
    • Light source changeover: 320 nm
    • Detector changeover: 1050 nm
    • Grating changeover: 720 nm 
  • Limiting resolution (nm):
    • UV-Vis: <0.048 nm
    • NIR: <0.2 nm
  • Spectral bandwidth SBW (nm): 2 nm recommended
    • UV-Vis: 0.01 – 5.00 nm, 0.01 nm steps
    • NIR: 0.04 – 20 nm
  • Signal averaging time (sec): 0.033 – 999 sec
  • Maximum scan rate (nm/min)
    • UV-Vis: 2000 nm/min
    • NIR: 8000 nm/min
  • Slew rate (wavelength changeover speed, nm/min)
    • UV-Vis: 16000 nm/min
    • NIR: 64000 nm/min
  • Data interval:
    • UV-Vis: 0.005 – 1.111 nm, 1.627 – 17.335 cm-1, 0.05 – 11.1 Å
    • NIR: 0.02 – 4.444 nm, 0.3145 – 4.0753 cm-1, 0.2 – 44.44 Å
    • * Interval range is dependent upon scan range
  • Repetitive scanning:
    • Maximum number of cycles: 999
    • Maximum cycle time (min): 9999
  • Baseline correction
  • Sample size:
    • 5 mm minimum to 275 mm maximum
    • 255 mm if detector slide mount is installed
    • 235 mm if a depolarizer is mounted in detector slide mount
    • Maximum physical thickness: 30 mm using standard supplied sample holder
  • UMA unit aperture masks: 1, 2 and 3 degrees (H and V) for incident beam

Location

Materials Characterization Laboratory
Furnas Hall room #109/110
University at Buffalo North Campus
Buffalo, NY 14260

Hours of operation

24/7

Fees

Category C Rates

  • Internal Academic: $15 per hour
  • External Academic: $27 per hour
  • Industry: $60 per hour
For general inquiries, contact:

Donald J. Goralski
Director, Shared Instrumentation Laboratories
(716) 645-5151

For technical inquiries, contact:

Zongmin (Shirley) Bei, PhD
Senior Research Support Specialist
Shared Instrumentation Laboratories (716) 645-5165