FT/IR-4X – Infrared Compact High-Grade

The FT/IR-4X is a powerful Mid-IR FTIR spectrometer (wavenumber range 7800 to 350 cm-1), with many features that you find in a research grade instrument, such as non-hygroscopic KRS-5 windows to prevent damage to the interferometer.

A temperature controlled DLaTGS detector and a high output ceramic source for maximum sensitivity.

Permanent optical alignment is guaranteed by corner cube (retro-reflective) mirrors with auto-alignment for maximum energy. With high resolution 0.4 cm-1 and a S/N greater than 35,000:1.


For most routine analysis the FT/IR-4X is used with the integrated ATR-PRO 4X single bounce ATR with a choice of prisms including a high throughput monolithic diamond, germanium (ideal for carbon-black samples) or ZnSe.

For flexible applications a second detector can be added, such as an MCT or InGaAs with automatic exchange and dedicated options to work from the near- to mid-IR and from mid- to the far-IR.

The powerful control and analysis software, Spectra Manager™ Suite, is compatible with Windows 10 or 11 Pro and Enterprise with user-customizable interface for automating routine tasks such as sample identification and quality testing using Quick-Start and QC Compare (with build your own library capability).

Spectra Manager™ Suite includes a wide variety of standard functions such as spectra measurement, Quick-Start, QC Compare and quantitative analysis. Additional applications can be added, such as chemometrics (PLS, PCR, CLS etc.).

The sample measurement screen can be fully customized according to user requirements and each customized screen and parameters can be saved for different users (User Adaptive Software).

KnowItAll® informatics package is included with 13,000 free spectra for life (HaveItAll 250,000 for free evaluation for three months).

The FT/IR-4X can be coupled to any of the IRT series of FTIR microscopes to create a versatile system for both micro and macro FTIR spectroscopy.

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FT/IR-4X with IRT-7200 imaging microscope