FTIR Spectrometers

The FT/IR-4X and FT/IR-6X/8X compact FTIR spectrometers offer reliable operation with the highest performance specifications.  Including a sealed (45 or 28 deg) interferometer with corner-cube mirrors and diode laser with AccuTrac™ DSP technology.

The FTIR Series includes the intuitive Spectra Manager™ Suite with integrated search software solution, KnowItAll® Informatics and database JASCO Edition

Molecular vibrations and infrared absorption

Principles of Infrared Spectroscopy

Models / FTIR-4X - FTIR-6X - FTIR-8X


FTIR Spectrometers

System Features


The interferometer is manufactured as a solid cast aluminum block and is completely sealed. The FT/IR-4X uses a 45 degree Michelson interferometer and the FT/IR-6X/8X use a 28 degree Michelson interferometer. A near frictionless bearing (without the need for a gas supply) supports the moving-mirror which is driven electromagnetically for accurate vibration-free movement.  Laser tracking of the moving mirror is made using a diode laser in the 4X and 6X and a HeNe laser in the 8X, coupled with Accutrac™ digital signal processing. The standard solid KRS-5 windows prevent hygroscopic damage often seen with KBr or coated windows used on some products.

Corner-Cube Mirrors

Corner cube mirrors automatically correct for any light path deviation, providing excellent optical stability at all times. Eliminating the need for dynamic alignment.

Diode Timing laser

Long lifetime diode laser for high resolution spectroscopy. HeNe laser used for the highest resolution and visible wavelengths.

Excellent S/N Ratio

The highly stable interferometer with high-intensity two-stage light source offers optimum signal-to-noise performance starting at 35,000:1 and up to 55,000:1 (under standardized conditions).

High Sensitivity Electrically Cooled DLaTGS Detector

A highly sensitive and stable Peltier cooled DLATGS detector is standard for all instruments.

Additional Detectors

Many optional detectors cover the range from 25,000 to 20 cm-1 and include several LN2 cooled MCT detectors for wide, narrow and mid-band. Other detectors includes silicon photo-diode, InGaAs, Si bolometer, etc.

Wavenumber Extension

The spectral range can be extended for all models including the FT/IR-4X from the visible to far-IR by switching various optical components, such as source, windows, beam splitter, and detector.

Vibration-Free Optical Bench

A specially designed vibration-proof mounting of the optical bench completely eliminates interference from external vibrations.

Purgeable & Vacuum

All models have fully sealed and desiccated aluminum interferometer chamber. In addition, an integrated purge for the sample compartment (4X) and complete system (6X and 8X) is included as standard.

The FT/IR-6X/8X can be updated to full or partial vacuum, with separate control of the interferometer, optical pathways and sample compartment.

Regulatory Compliance

For laboratories that operate under the requirement of regulatory compliance, instrument validation routine  standard for verification of instrument performance compliant with ASTM, EP, and JP procedures. Spectra Manager CFR is compliant to the latest requirements of ALCOA+

Spectra Manager Suite

Spectra Manager 2.5 software allows users to develop predefined methods for their custom sampling and analysis applications, executing them with a single button press. Data Compare is standard for comparing a measured spectrum with a custom spectral library. Wiley KnowItAll Informatics is available as an upgrade.

Microscope/IR Imaging

The IRT-5000 and 7000 infrared microscopes can be easily interfaced to any FT/IR-4X or FT/IR-6X/8X instrument.

Brochure and Solutions

Download FT-IR Resources

Please fill in the Form

to download your PDF Books or Brochures.

Please fill in the Form

to download your PDF Books or Brochures.