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  • On-line transmission spectroscopy in liquids at long distance
  • High throughput in any part of UV –Vis to Mid Infrared spectra
  • Flexible and robust for industrial applications in harsh environment
  • Compatible with all spectrometers and automated process-interfaces

FlexiSpec® product line includes the latest generation of Transmission (single pass) & TransFlex (dual pass) fiber optic probes to be used with any spectrometer or photometer. FlexiSpec® Single & Dual Pass fiber optic probes are compatible with process-interfaces to be cleanable and to enable reaction monitoring in lab, pilot plant and run full automated process control.


  • Reaction Monitoring in real time
  • Process Analytical Technologies (PAT)
  • Crystallization Development & Screening
  • Analytical Characterization
  • Biopharmaceutical Analysis
  • Biofuel Development & Production

Specification of Fiber Optic Transmission and Transflection Probes FlexiSpec®

Probe TypeTransmissionTransflection
Transmission0.2 - 1.3 µm0.4 - 2.2 µm0.2 -1.3µm0.4 - 2.2 µm1.6 - 5.5 µm
Fiber TypeSilica UV-VisSilica Vis-NIRSilica UV-VisSilica Vis-NIRCIR
Gap Dimension2; 5; 10; 20 mm2; 5; 10 mm2; 5; 10; 20 mm2; 5; 10 mm0.05 – 2.0 mm
Temperature range200°C200°C200°C200°C100°C
Minimum Bending Radius120 mm
(for 600 µm core)
120 mm
(for 600 µm core)
120 mm
(for 600 µm core)
120 mm
(for 600 µm core)
130 mm
Common Parameters of Fiber Optic Transmission & Transflection Probes FlexiSpec®
Total Length1.5m (opt.: 1 to 30m)
Customized dimensions are available on request
Shaft Length230 mm (opt.: 50-500 mm)
Customized dimensions are available on request
Shaft Diameter12mm
Shaft MaterialSS, Hastelloy C22
Protective Tube MaterialLiquid Tight SS-Conduit, KOPEX-Tube
Input / Output ConnectorsLong SMA; FC/PC; ST
Compatible Process-InterfaceCeramat-FOS or SensoGate-FOS

Application Notes: Fiber Optic Transmission and TransFlex Probe

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