PerkinElmer has launched the FL 6500™ pulse xenon and FL 8500™ continuous wave fluorescence spectrometers. The FL 8500 fluorescence spectrometer uses a xenon continuous wave excitation source with PerkinElmer optics for high sensitivity measurements, at scan speeds up to 60,000 nm min–1. The FL 6500 fluorescence spectrometer, which uses PerkinElmer optics and a xenon pulse excitation source with variable power settings, is designed for testing samples that are susceptible to photo bleaching. Both instruments share the new Spectrum™ FL software that mirrors laboratory workflows for simple, streamlined method development and comprehensive data analysis in minutes. Optional interchangeable, plug-and-play accessories are auto-recognised by the software. The software is also available in Enhanced Security (ES) to maintain Title 21 CFR Part 11 compliance and adhere to stringent data integrity requirements.