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Fiber Optic ATR-Probes

  • 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 type Diamond ATR ZnSe ATR Silicon ATR Cubic Zirconium ATR
Transmission 5.2-17µm
(600-3100cm -1) +
(600- 3100cm -1)
(1550- 650cm1)
Fiber type PIR-900/1000
Silver Halide
Silver Halide
Silver Halide
CIR 500/550
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
10 Bar 100 Bar 100 Bar

Common Parameters of Fiber Optic ATR-Probes FlexiSpec®

Total Length 1.5 m (opt.:1m to 5m)*
Shaft Length 300 mm (opt.: 100-700 mm)*
Shaft Diameter 12 mm, 6.3 mm (opt.:3mm)
Shaft Material Hastelloy C22
Length of Legs 500 mm (opt. 200 - 500 mm)
Protective Tube Material Liquid Tight SS-Conduit, KOPEX-Tube
Minimal Bending Radius 130 mm
Input / Output Connectors Long SMA (opt.: any other type)
Compatible Process-Interfaces Ceramat-FOS or SensoGate-FOS**

*Customized dimensions are available on request
**Available for 12 mm shafts only

Application Notes
Summary Table of ATR Probes