2 December 2024

Varian UV-VIS-NIR Spectrophotometer system is an optical characterization tool that can measure the reflection, transmission, and absorption spectra of both solid and liquid samples. Parameters such as material thickness, band gap, absorption coefficient, and refractive index can be calculated from the spectra obtained using this system.

• Solid Sample Holder for Transmission Measurements
• Internal Diffuse Reflectance Accessory (DRA 900-DRA 2500)
  • Wavelength range: 200–900 nm for DRA 900; 200–2500 nm for DRA 2500
  • R928 PMT for UV-VIS in DRA 900; R928 PMT for UV-VIS in DRA 2500, TE# cooled InGaAs detectors
  • UV-VIS: R928 PMT for DRA 900; R928 PMT, TE# cooled InGaAs detectors for DRA 2500
  • Sphere radius: 110 mm
  • 1 g/cm³ density, 4 mm thick Poly Tetra Ethyl Fluoro Ethylene (PTFE) inner coating
  • Reflection aperture with a radius of 16 mm.
  • Sample capacity: Minimum 88 mm x 12 mm, Maximum 100 mm x 200 mm
• Absolute Smooth Reflectance Accessory
  • Wavelength range: 175–3300 nm
  • Incident angle: 7º
  • Minimum reflectance radius for double reflections: 25 mm, single reflections: 12 mm
  • Maximum sample thickness: 35 mm
• External Smooth Reflectance Accessory (HARRICK ERA 30G and 60G)
  • Two sets with incident angles of 30º and 60º
  • Masks with radii of 3, 6, 13 mm for examining small areas of large samples or small samples

• • Can be mounted both on the solid sample holder and the surface

• Tungsten halogen lamp and deuterium arc lamp
• Schwarzschild double-beam optics for maximum light transmission
• R928 photomultiplier tube for UV-VIS, Peltier cooled PbS photocell for NIR
• Advanced electronic design
• Large sample compartment
• Dual Littrow monochromator
• Optical isolation system
• 1200 gr/mm grating system for UV-VIS at 250 nm, 300 gr/mm for NIR at 1192 nm