Ultraviolet-Visible Spectroscopy (UV-Vis)

Ultraviolet-Visible Spectroscopy or Ultraviolet-Visible Spectrophotometry (UV-Vis or UV/Vis) refers to Absorption Spectroscopy  or Reflectance Spectroscopy in the Ultraviolet -V  Spectral region.  This means it uses light in the visible and adjacent (Near-UV and Near-Infrared  (NIR)) ranges.  The Absorption or Reflectance in the visible range directly affects the perceived color of the chemicals  involved.  In this region of the electromagnetic spectrum , molecules  undergo electronic transitions .  This technique is complementary to fluorescence spectroscopy , in that fluorescence  deals with transitions from the excited state  to the ground state , while absorption measures transitions from the ground state to the excited state.

Features

• Acquire Accurate Spectra with Scan Speeds up to 4200 nm/min
  
• Depend on Dual-Beam Optics for superior photometric accuracy during long measurements
  
• Acquire measurements from the UV to the Near-IR
  
• Choose either a Local Control Instrument or a Computer-Controlled model to match the needs of your laboratory
  
• Increase sample through put with the integrated 6-cell changer; save data to a USB memory device
  
• Rely on Accurate Data with pre-programmed performance verification methods; save bench space with small footprint
  
• Accessories available for every type of sample, Customize to fit your laboratory needs
  
• Wavelength Monitoring with Automated or Manual Peak Picking options for up to 20 peaks or valleys
  
• Customized Single and Multi-Component Quantitative Methods with the entry of up to 100 standards
  
• Convenient Pre-Defined Biological Methods for proteins and nucleic acids
  
• Materials Analysis Software for film thickness and color analysis
  
• Sensitive Photomultiplier Tube (PMT) detector for wide measurement across dynamic range
  
• 0.2nm spectral bandwidth for high-resolution data
  
• Full Line of Accessories for analyzing Solid Samples
  
• Fast results: UV-Vis spectral acquisition and analysis in less than 1 second
  
• Excellent Reproducibility: Stable Optics, Low Noise Electronics, No Moving Parts
  
• Simple Operation: task-oriented and application software, direct access to cells and cell  holder
  
• Effortless Servicing: pre-aligned Deuterium and Tungsten Lamps exchanged easily
• Good Laboratory Practices (GLP): self-test and revisions built into the software/firmware
  
• Pharmaceutical Compliance: Regulated Software for European and US pharmacopoeia
  
• Flexible Accessories: Autosamplers, Thermostatted Cell Holders, Multi Cell Transports, Sipper Systems