FT/IR-4000 and 6000 Series

A Comprehensive Range of FTIR Spectrometers

For many FTIR applications from education and routine analysis to high-level research including optimized systems for materials analysis, such as characterization & identification, film thickness, gas analysis, microscope imaging, step-scan, and dedicated semiconductor research.

FTIR Spectrometers

The FT/IR-4000 and FT/IR-6000 Series of compact FTIR spectrometers offers reliable operation with  the highest performance specifications.  Including a sealed (45 or 28 deg) interferometer with corner-cube mirrors and AccuTrac™ DSP technology for rapid and accurate tracking of mirror position and velocity for optimum wavenumber precision and signal-to-noise performance.

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

FTIR Spectrometers System Features


The interferometer is manufactured as a solid cast aluminum block and is completely sealed. The FT/IR-4000 uses a 45 deg Michelson interferometer and the FT/IR-6000 uses a 28 degree Michelson interferometer. A near frictionless bearing (without the need for a gas supply) supports the moving mirror which is driven by a ‘voice coil’ for accurate vibration free movement.  Laser tracking of the moving mirror is made using Accutrac™ with the latest in digital signal processing. The standard KRS-5 windows prevent hygroscopic damage often seen with KBr  or coated windows used on some products.


All models include a fully sealed and desiccated interferometer chamber. In addition, an integrated purge for the optical system is included as standard.


The FT/IR-6000 can be updated to full or partial vacuum, with separate control of the interferometer, optical pathways and sample compartment.

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.

FT-IR Spectrometers Scanning

Excellent S/N Ratio

The highly stable interferometer with high-intensity two-stage light source offers optimum signal-to-noise performance starting at 28,000:1 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 5 cm-1 and include several LN2 cooled pv/pc MCT detectors for wide, narrow and mid-band. Other detectors includes silicon photo-diode, InGaAs, He bolometer, etc.

Wavenumber Extension

The working range can be extended 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.

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+

Microscope/IR Imaging

The IRT-1000, 5000, or 7000 infrared microscopes can be easily interfaced to any FT/IR-4000 or FT/IR-6000 instrument.