Fiber Optic ATR Loop Probe

Main features:

  • High throughput at Mid InfraRed range
  • On-line absorbance spectroscopy of liquids, pastes & soft solid surfaces
  • Compatible with all FTIR, QCL and IR- Filter spectrometers
  • Cost effective alternative to more expensive ATR-IR-fiber probes
  • Replaceable ATR Loop PIR-Fiber Tips

The ATR-Loop Infrared PIR-fiber probe was the first in FlexiSpec® product line designed for use with FTIR and other Mid IR spectrometers. ATR-Loop PIR-fiber probes are well-suited for remote analysis of composition of liquids, pastes and soft surfaces and do not require sample preparation. The Loop fiber probe is the simplest one in the FlexiSpec® product family to allow for low cost ATR-spectroscopy.

For more information please visit our “Downloads” section and find relative articles at our “Publications” page.

Specification of Fiber Optic ATR-Loop Probes FlexiSpec®
 Probe type Chalcogenide-IR (CIR) 
Polycrystalline-IR (PIR)
 Transmission range  6500 – 1550 cm-1 (1.5-6.0μm)    2500 – 600 cm -1 (4-17μm)
 Fiber type  Chalcogenide glass (As-S)  Silver Halide (AgCl:AgBr)
 Temperature range  ≤ 90°C  ≤ 100°C
  Common Parameters of Fiber Optic Multi-Loop Probes FlexiSpec®
Total Length 1m (opt.: PIR up to 5m, CIR up to 10m) *
Shaft Length 120mm *
Shaft Diameter 10mm
Shaft Material PEEK
Protective Tube Material PEEK
Input / Output Connectors Long SMA-905 (opt.: any other type)
Detachable PIR fiber Loop Loop; Multi-Loop (Double-, Triple-Loop)
  *Customized dimensions are available on request
  • Remote evanescent absorption (ATR-) spectroscopy in-citu
  • Multiple ATR-spectroscopy by immersion of fi ber loop in liquid
  • In-vivo molecular spectroscopy for medical diagnostics by simple touch of ATR-Loop on skin or tissue