Comparison of Scanning and Array UV/VIS Spectrophotometers
UV/Vis spectrophotometers are classified into two categories according to the geometry of the components that build up the optical system; scanning instruments, usually equipped with a tungsten-deuterium lamp combination, and array spectrophotometers, which typically use a xenon lamp. Careful consideration of the features and benefits of both systems will enable users to make the correct choice for their laboratory.
The performance aspects of a UV/VIS spectrophotometer – such as optical and wavelength resolution, measurement speed, bench space requirements and cost of ownership – depend directly on the design of the instrument. Most of the currently available UV/VIS spectrophotometers are equipped with a tungsten-deuterium lamp combination as the light source, but there are advantages to using a system that combines array technology with a xenon light source, including:
· Extended instrument lifetime
· Faster measurements due to the lack of moving parts
· Smaller footprint
· More robust set-up and reduced downtime
· Fewer lamp replacements
· Minimal maintenance costs
This white paper explains the differences between these set-ups, including the type of lamp and internal optical configuration, and how the design contributes to performance characteristics and the efficiency of your lab.