ATR Chromophore Analysis

Many dyes, aromatics, and other chromophores have absorptions in the UV and visible regions of the spectrum that are orders of magnitude too strong to allow transmission analysis without substantial dilution. However, these substances can often be analyzed by means of attenuated total reflectance (ATR), which effectively provides a pathlength of the order of the optical wavelength.


ATR Tunnel Cells

Hellma Axiom’s FNL Series ATR cells4 provide a high degree of flexibility by allowing the characteristics of the ATR element to be specified for optimum performance in a given application.12

FNL Series Features

  • Fiber–optic coupling to most UV–Visible spectrometers
  • Response down to 200 nm
  • Sensitivity set by interchangeable ATR elements
  • Compatible with lab and process applications
  • Rapid sample cleanout

FNL Data Sheet (.pdf)