The X-Cite® exacte ultra stable fluorescence light source employs a DC-powered mercury lamp coupled with proprietary Closed-Loop Feedback technology to provide unmatched short and long-term intensity stability, for imaging protocols lasting from milliseconds to days. With the X-Cite® Optical Power Measurement System, light output can also be calibrated in absolute power units (watts), ensuring truly repeatable fluorescence illumination for imaging experiments.


  • DC lamp with Closed-Loop Feedback
  • Calibration via optional Power Meter
  • Adjustable Iris with 1% steps
  • Internal High Speed Shutter
  • Liquid Light Guide
  • Automatic Light Guide Detection
  • Pre-aligned, 2000 hour lamp
  • Intelli-Lamp® Technology
  • Computer Control & GUI


  • Short and long-term intensity stability
  • Provides output in watts for consistent illumination and empirical repeatability
  • Intensity control limits photobleaching
  • Flexibility in configuring imaging systems for different applications
  • Excellent illumination uniformity, no heat transferred to microscope
  • Ensures proper/complete insertion of light guide to optimize performance and lifetime
  • Easy lamp replacement with no alignment required, lower running costs
  • Maintains optimum lamp temperature; tracks lamp hours
  • Enables computer-driven applications and stability data exporting