Vernier Software and Technology
Vernier Software & Technology

Vernier Flash Photolysis Spectrometer

Vernier Flash Photolysis Spectrometer product image

The Vernier Flash Photolysis Spectrometer is a simple, user-friendly device for demonstrating the fundamental principles of chemical kinetics and photochemistry to undergraduate chemistry students. It measures the absorption and emission changes over time of a photoexcited sample at a single wavelength, which is determined by a filter (600 nm filter included).


Photochemical reactions are very important in many areas of chemistry with applications including photodynamic therapy and solar energy harvesting. These reactions often proceed quickly and, as a result, require fast reaction techniques to analyze. The Vernier Flash Photolysis Spectrometer is a simple, user-friendly transient absorption spectrometer. It is useful for demonstrating the fundamental principles of these types of fast, photo-catalyzed reactions. Some experiment ideas include kinetics of photochemical reactions such as

  • Excited-state dynamics
  • Triplet-decay analysis
  • Time-resolved phosphorescence
  • Phosphorescence-quenching kinetics
  • Isomerization
  • Reactive free radicals
  • Photocatalysis

Sample Data


  • Spectral coverage: 450–750 nm
  • Temporal resolution: 100 microseconds
  • Spectral Resolution: Determined by the interference filter used (10 nm with the included 600 nm interference filter)
  • Minimum time window: 15 milliseconds



The reference manual contains helpful background information on excited state chemical kinetics, important technical information for operation, and three experiments:

Sensor Requirements

The Vernier Flash Photolysis Spectrometer is currently for Windows computers only. It connects directly to a computer via USB and does not require a Vernier interface. The software is provided as a free download.

Download Flash Photolysis Spectrometer Software

What’s Included

  • Vernier Flash Photolysis Spectrometer
  • AC power supply
  • One fluorescence quartz cuvette
  • USB cable
  • Empty filter housing (fits standard size, third party filters: 12.5 mm OD and 9.0 mm ID)
  • 600 nm filter (10 nm FWHM) in filter housing
  • Quick start guide

Ordering Information

All prices are for U.S. educators.

NameOrder CodePriceQuantity
Vernier Flash Photolysis SpectrometerVSP-FP$5,400


Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications. Product usage disclaimer »

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