FLEX
A powerful and flexible spectrometer that fits in the palm of your hand
- Perfect as General Purpose Solution
- Improved Optical Design – The Best in Class!
- User-Interchangeable Slits and Optical Filters
- UV-Vis-NIR (185-1100 nm)
- Fiber Optic Spectrometer
- Software LightScan Included
Perfect as a general-purpose solution for spectroscopic applications
With a compact and flexible design, FLEX is more than capable of delivering a great performance with improved sensitivity and with the ability to be integrated into most general-purpose spectroscopic setups.
Best optics for a very low stray light
FLEX is the perfect solution for those who have the need for absorbance/transmittance measurements. The simultaneous optimization of the optical and mechanical design provides FLEX with a very low stray light percentage (less than 0.1%, over the entire operational spectral range).
Easy to integrate in your setup
The SMA fiber optic connector allows for a simple attachment of FLEX to a wide range of spectroscopic setups without the need for complex optical alignments. This flexibility is complemented with a trigger integration tool, which includes triggers in/out and delays. FLEX and all spectroscopic components of your setup can be centralized for full control with our new SPEC Hub solution.
Control the sensitivity and resolution of your spectrometer
With the FLEX, you can take advantage of interchangeable slits and optical filters. User-interchangeable slits offer an easy and simple way of setting the ideal optical resolution/sensitivity while interchangeable optical filters provide the user with the ability to narrow the operational wavelength range of the spectrometer. These features allow you to change from absorbance to a fluorescence setup in a few minutes. Add a Slit Kit to your order and get all the flexibility you need.
Maximum flexibility with the best performance
FLEX is available in both standard (STD) and improved- optical resolution (RES+) versions for ready-to-use and user-customizable configurations. For both solutions, users have the possibility of choosing an improved sensitivity configuration, which translates into a more efficient light collection optics.
Customize your spectrometer
Customizing optical components allows you to configure the FLEX for more specific applications. In addition to user-interchangeable slits and optical filters, the flexibility in selecting the diffraction grating, adding a collecting lens, or choosing the detector version helps you to set the operational wavelength range, sensitivity, and optical resolution of your spectrometer.
Setup Examples
Absorbance with Standard Cuvette Holder

Standard Cuvette Holder
SCH
Optical Fiber Patch Cord
Optical Fiber Patch Cord
FLEX Spectrometer
Deuterium Tungsten Light Source
LS-DW
Fluorescence with Flow Cell

Flow Cell
Optical Fiber Patch Cord
Optical Fiber Patch Cord
FLEX Spectrometer
LED Light Source
LS-LED
Reflectance with Reflectance Probe

Standard Probe Holder
SPH
Reflectance Probe
RP
FLEX Spectrometer
Deuterium Tungsten High Power Light Source
LS-DWHP
Pre-Configured Spectrometers
FLEX is available in a pre-configured STD and RES+ version for narrow-range UV-Vis and Vis-NIR and extended-range UV-Vis-NIR applications. The difference between these two versions is entirely at the detection level where the Sony detector has a better response in regions near the UV (a good choice for measurements below 500 nm) while the Toshiba detector has a better response above 500 nm (a good choice for Vis-NIR measurements). In addition to a slightly higher signal-to-noise ratio, the Toshiba detector also has a better optical resolution performance.
User-Configured Spectrometers
The FLEX spectrometer offers maximum flexibility with a build-your-own configuration. By selecting each component of the optical bench, which includes the entrance slit, optical filter, diffraction grating, collecting lens, and detector, you can optimize your FLEX for parameters such as operational spectral range, optical resolution, and sensitivity and ideally meet your application demands.
Check our knowledge database or contact the Sarspec Engineers for getting more information about the FLEX user-customizable configuration.
Sarspec has a new tool that allows each user to configure the desired configuration, go to our spectrometer configurator page and get your user-configured spectrometer in minutes.
Typical Applications
FLEX is an entry-level spectrometer with remarkable performance and an innovative design to perfectly meet your demands for all the absorbance, transmittance, reflectance, and fluorescence measurements. The versatility implied by the user-interchangeable slits and optical filters feature allows you to set your FLEX for high emissive fluorescence measurements. This large flexibility allied to an improved sensitivity makes this system the ultimate solution for a wide range of spectroscopic industries and disciplines involved in basic research and scientific discovery. Find out more about the flexibility of our measurements setup using the FLEX in our Application Notes database.
Ordering Information
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