Cary 7000

Monochromator Double out-of-plane Littrow monochromator.

Grating

• 70 x 45 mm
• UV-Vis Ruled line diffraction grating, 1200 lines/mm blazed at 250 nm
• NIR Ruled line diffraction grating, 300 lines/mm blazed at 1192 nm

Beam splitting system

• Rotating beam splitter, which measures a sample, dark and reference signal
• per cycle with a speed of 30 Hz

Detectors

• UV-Vis R928 PMT
• NIR Cooled PbSmart PbS

Limiting resolution (nm)

• UV-Vis <0.048 nm
• NIR <0.2 nm

Stray light (%T)

• At 220 nm (10 g/L NaI ASTM method) <0.00007%
• At 370 nm (50 mg/L NaNO2) <0.00007%
• At 1420 nm (H2O, 1 cm pathlength) <0.0002%
• At 2365 nm (CHCl3, 1 cm pathlength) <0.00045%

Wavelength range (nm)

• (N2 purge required below 185 nm)
• 175–3300 nm

Wavelength accuracy (nm)

• Deuterium lamp lines
• UV-Vis: 190–900 nm +- 0.08 nm
• NIR: 760–3000 nm +- 0.4 nm

Wavelength reproducibility (nm)

• Peak separation of repetitive scanning of a UV-Vis line source <0.025 nm
• Peak separation of repetitive scanning of a IR line source <0.1 nm
• Standard deviation of 10 measurements, UV-Vis <0.005 nm
• Standard deviation of 10 measurements, NIR <0.02 nm

Photometric accuracy (Abs)

• Using double aperture method at 0.3 Abs UV-Vis <0.00025 Abs

Cary Universal Measurement Accessory

Measurement modes

• Absolute specular refl ection at variable angle from 5–85° in 0.02° intervals
• Direct transmission and variable angle transmission from 0–90° in 0.02° intervals
• Diffuse scattering, refl ection or transmission through independent sample rotation (360°) and detector
• positioning between 10–350° at 0.02° in intervals
• Absorptance, A where A= 1–R–T at variable angle without moving the sample or beam onto the sample
• for improved productivity and greater accuracy.
• Refl ection/Transmission at single wavelength (read) or wavelength range (scan)

Wavelength range 190–2800 nm

Auto polarizer wavelength range 250–2500 nm

Sample size

• Diameter:
  • 5 mm minimum–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

Apertures

• Incident beam: 1, 2 and 3 degrees
• Detector: 1, 1.8, 2, 3, 4, 4.4, 5 and 6°