FLS920-st: A Complete Fluorescence, Steady State Laboratory in one Instrument by Edinburgh Instruments Ltd.



FLS920-st: A Complete Fluorescence, Steady State Laboratory in one Instrument by Edinburgh Instruments Ltd. product image
FLS920-st: A Complete Fluorescence, Steady State Laboratory in one Instrument


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The FLS920-st is the world’s most sensitive spectrofluorimeter offering combined steady state and fluorescence lifetime capabilities.

Regarded as a complete laboratory in one instrument, the FLS920-st offers ultimate sensitivity with high spectral resolution and excellent stray light rejection

Features Include:

  • Guaranteed S/N ratio of >6000:1
  • Count rates of up to 100MHz
  • Resolution from 0.05 – 18nm
  • Stray Light Suppression of 1 x 105
  • Automated spectral correction
  • Lifetimes from 100picoseconds to 10 microsecond
  • High dynamic range and temporal resolution
  • Time Correlated Single Photon Counting operation
  • Fully computer controlled through Windows software
  • Full data reconvolution using a non-linear least square fitting routine

The FLS920-st is a modular, computer controlled L - geometry spectrometer for acquiring steady state luminescence spectra, time resolved fluorescence spectra and the associated fluorescence decays in the ultraviolet - visible - near infra red spectral range with single photon counting sensitivity. The steady state mode uses a single photon counting, fast photon counter scalar PC plug-in card for steady state measurements. This card operates with count rates up to 100MHz . For fluorescence lifetime acquisition the system employs the technique of Time Correlated Single Photon Counting: this technique is widely accepted to be the method of choice for maximum sensitivity, dynamic range, accuracy and precision. The sensitivity of the system guarantees a signal to noise ratio of 6000:1 for water Raman spectrum measured with excitation at 350 nm, emission at 397 nm, with a 1 second integration time and 5 nm spectral bandwidth.

The configuration of the FLS920-st consists of the following hardware:

  • CW 450 W xenon arc lamp
  • Nanosecond pulsed flashlamp, 1ns FWHM pulse duration. Supplied with driver and start synchronisation photomultiplier, gas filling and vacuum pumping station
  • Excitation monochromator: 300mm focal length, Czerny-Turner design triple grating turret facility with computer controlled wavelength selection and computer controlled continuously adjustable slits. Stray light rejection 1:105 , resolution down to 0.05nm
  • versatile sample chamber with integral controller, safety shutters, signal attenuator and filter holders
  • Emission monochromator: 300mm focal length, Czerny-Turner design triple grating turret facility with computer controlled wavelength selection and computer controlled continuously adjustable slits. Stray light rejection 1:105 , resolution down to 0.05nm
  • single photon counting stop photomultiplier
  • TCC900 card for TCSPC data acquisition
  • PCS900 card for single photon counting data acquisition
  • Dedicated PC running F900 software for comprehensive spectrometer control, performance monitoring, fluorescence spectral data acquisition, correction and analysis library.

Software Interface:
In keeping with the modularity of the FLS920-st spectrometer, the F900 advanced software is a user friendly package. Irrespective of the system configuration and accessories, the F900 software provides the user with complete control. Measurement set-up and data acquisition is made through a transparent menu system and the measurement modes within the software reflect the system configuration by means of a simple operating environment. Control of the hardware settings on both the TCC900 and the PCS900 data acquisition cards are easily accessed through the F900 software.

System Flexibility:
The modular design of every spectrometer provides maximum flexibility to meet the requirements for a wide range of applications. We offer a wide range of accessories for the FLS920-st together with a range of standard upgrade options for this spectrometer.

Data Acquisition:
The FLS920-st incorporates state of the art single photon counting technology in the form of the TCC900 and PCS900 computer plug-in card. The PCS900 card is a fast pulse count scalar card that can operate with count rates of up to 100MHz. The TCC900 card is our PC plug-in card for Time Correlated Single Photon Counting Data Acquisition. TCSPC is widely accepted to be the method of choice for maximum sensitivity, dynamic range, accuracy and precision.

Product Overview

FLS920-st: A Complete Fluorescence, Steady State Laboratory in one Instrument by Edinburgh Instruments Ltd. product image

FLS920-st: A Complete Fluorescence, Steady State Laboratory in one Instrument

Manufacturer Edinburgh Instruments Ltd.

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