• A broadband light source
• Filter wheel
• Monochromator
• Sample chamber or system (such as a fiber optic probe)
• Detection system

A dual-beam configuration is recommended wherever possible for high-quality reproducible quantitative analysis. The following are some guidelines for absorbance, transmittance, and reflectance measurements:

1. Most chemical and filter applications require smaller monochromators, such as the Acton SpectraPro-150 or Acton SpectraPro-300i. Some applications with samples containing narrow features may require larger monochromators, such as the Acton SpectraPro-500i with 500 mm focal length.

2. Consider the following when choosing a detector:

• Total wavelength region required for the sample measurements
• Expected level of sample absorption
• Light source intensity over the entire wavelength region for the sample measurements

 
PMT's are normally required for UV measurements, while silicon detectors typically work well over the 400-1100nm range. InGaAs and other appropriate detectors are recommended for measurements above 800nm.

Choose from the following for more detailed application descriptions:

• Absorption Spectroscopy
• Reflection Spectroscopy
• Transmission Spectroscopy