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.


  • 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

About PNF

Pooya Negar Fanavar Company “PNF” established in Tehran on the subject of Purchase, Sales and After Sales Services of Analytical Instruments, Ambient Air Pollution Monitoring Systems, Water Monitoring Systems, Environmental Testing Equipment and Import of related products... more