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  • High throughput in any part of Near & Mid InfraRed-spectrum
  • ATR-tip shaped for immersion in liquid fl ow without dead zone
  • Flexible and robust for industrial applications in harsh environment
  • Compatible with all spectrometers and automated process-interfaces

FlexiSpec® product line from art photonics is the latest generation of Attenuated Total Reflection. Near & Mid IR-fiber ATR-Probes produced for any type of FT-NIR, FT-IR and other IR-spectrometers, photometers and IR-LED or QCL spectral sensors. ATR immersion fiber optic probes with patented design are suitable for reaction monitoring in lab, pilot plant and for full automated process control.


  • Reaction Monitoring in real time
  • Process Analytical Technologies (PAT)
  • Remote Polymerization Control
  • Crystallization Process Screening
  • In-situ IR-Spectroscopy for PAT in Chemical, Petrochemical, Atomic, Biopharmaceutical & Food Industry

Specification of Fiber Optic Immersion ATR- Probes FlexiSpec®

Probe TypeDiamond ATRZnSe ATRSilicon ATRCubic Zirconium ATR
Transmission5.2-17µm(600-1900cm1)3.2-17µm(600-3100cm -1)5.2-17µm(600- 3100cm-1)1.5-6.5µm(1550- 650cm1)
Fiber TypePIR-900/1000
Silver Halide
Silver Halide
Silver Halide
CIR 500/550
Chalcogenide glass (As-S)
Temperature range-100°C / + 140°C-100°C / + 140°C-100°C / +250°C-100°C /+ 200°C
Pressure (max) 200Bar
(300 Bar) on request
10Bar100 Bar100 Bar
Common Parameters of Fiber Optic ATR-Probes FlexiSpec®
Total Length1.5m (opt.: 1m to 5m)
Customized dimensions are available on request
Shaft Length300 mm (opt.: 100-700 mm)
Customized dimensions are available on request
Shaft Diameter12mm, 6.3 mm (opt.: 3mm)
Shaft MaterialHastelloy C22
Length of Legs500mm (opt.: 200mm to 500mm)
Protective Tube MaterialLiquid Tight SS-Conduit, KOPEX-Tube
Minimal Bending Radius130mm
Input / Output ConnectorsLong SMA (opt.: any other type)
Compatible Process-InterfaceCeramat-FOS or SensoGate-FOS
Available for 12 mm shafts only

Application Notes: Fiber Optic ATR-Probes
Fiber Optic ATR-Probes Summary Table

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