High Sensitivity
Signal-to-noise ratio >60,000
Fast Measurements
Spectrum acquisition <1 s
Stable Operation
No alignment required

FSM Fourier Transform Infrared (FTIR) Spectrometers

FSM 2201/2202, FSM 2203, FSM 2211
FSM Fourier Transform Infrared (FTIR) Spectrometers
FSM Fourier Transform Infrared (FTIR) spectrometers are high-precision laboratory instruments designed for routine measurements, advanced scientific research, and industrial analysis in the mid- and near-infrared spectral regions. They combine high sensitivity, fast measurement, and automation with the flexibility to support specialized analytical applications.
FSM 2201/2202
FSM 2201/2202
The FSM 2201/2202 spectrometers offer a balanced combination of performance, reliability, and cost. They combine broad analytical capabilities with straightforward maintenance and provide stable results even under intensive use.

The instruments provide high measurement accuracy and are suitable for both routine laboratory analysis and advanced scientific research.

FSM 2201/2202 Advantages

Self-Compensating Michelson Interferometer
No dynamic alignment is required, reducing maintenance requirements.
Large Sample Compartment
Accommodates a wide range of optical accessories and sample cells.
High Signal-to-Noise Ratio
Provides reliable detection of weak spectral signals.
Broad Range of Applications
Suitable for environmental monitoring, forensic analysis, and industrial product quality control.

FSM 2201/2202 Technical Specifications

Spectral range, cm−1 370–7800
Spectral resolution, cm−1 1.0 (FSM 2201) and 0.5 (FSM 2202)
Signal-to-noise ratio (1 min measurement time in the 2100–2200 cm−1 range at a resolution of 4 cm−1) >60,000
Minimum acquisition time for one full spectrum, s <1
Beamsplitter KBr with Ge-based coating
Radiation source High-temperature metal-ceramic source
Detector DLATGS pyroelectric detector
Sample compartment dimensions, mm 150 × 190 × 170
Overall dimensions, mm 520 × 370 × 250
Weight, kg 28
FSM 2203
FSM 2203
The FSM 2203 is a laboratory FTIR spectrometer designed for applications requiring high spectral resolution and maximum analytical accuracy.

It is designed for scientific and research laboratories requiring high resolving power and the ability to use non-standard external radiation sources.

FSM 2203 Advantages

Mid-Infrared Spectral Range
Operation in the spectral region used for a wide range of analytical applications.
Inert Gas Purging
Minimizes interference from atmospheric moisture and CO₂ during measurements.
Optical Port for External Sources
Supports specialized experiments using external radiation sources.
Gas Analysis
Suitable for qualitative and quantitative analysis of gas mixtures.

FSM 2203 Technical Specifications

Spectral range, cm−1 370–7800
Spectral resolution, cm−1 0.1
Signal-to-noise ratio (1 min measurement time in the 2100–2200 cm−1 range at a resolution of 4 cm−1) >60,000
Minimum acquisition time for one full spectrum, s <1
Beamsplitter KBr with Ge-based coating
Radiation source High-temperature metal-ceramic source or external source
Detector DLATGS detector, cooled PbSe photoresistor
Sample compartment dimensions, mm 150 × 190 × 170
Overall dimensions, mm 540 × 490 × 250
Weight, kg 36
Number of measurement channels 2
FSM 2211
FSM 2211
The FSM 2211 is a near-infrared Fourier transform spectrometer designed for fast, information-rich analysis. It is particularly suitable for applications in the food, pharmaceutical, fragrance, and cosmetics industries.

The FSM 2211 is suitable for:
  • incoming quality control of raw materials;
  • monitoring critical points in production processes;
  • evaluation of finished products.

It can also be used to identify counterfeit pharmaceutical products.

FSM 2211 Advantages

Near-Infrared (NIR) Spectroscopy
Fast qualitative and quantitative analysis of sample composition.
Model-Based Quantitative Analysis
Uses calibration models developed from accurately characterized reference samples.
No Sample Preparation Required
No complex sample preparation or specialized operator training is required.
Self-Compensating Michelson Interferometer
Provides stable results without complex alignment procedures.
NIR spectroscopy with the FSM 2211 provides highly informative spectra.
Qualitative analysis is based on the positions of absorption bands in the infrared spectrum.
Quantitative analysis uses absorption band intensity to determine component concentrations.
Quantitative results are calculated using calibration models that establish relationships between measured absorption parameters and concentration or other sample properties.

These models are built from spectra of reference samples with known properties determined using standard chemical methods.

Chemometric data-processing algorithms make the FSM 2211 suitable for industrial applications requiring fast, straightforward analysis with objective and reproducible results.

FSM 2211 Technical Specifications

Spectral range, cm−1 3700–12500
Spectral resolution, cm−1 2
Signal-to-noise ratio (1 min measurement time in the 2100–2200 cm−1 range at a resolution of 4 cm−1) >60,000
Minimum acquisition time for one full spectrum, s <1
Beamsplitter CaF₂ with a Ge-based multilayer coating
Radiation source Halogen lamp
Detector InGaAs photodiode, Si photodiode
Sample compartment dimensions, mm 150 × 190 × 170
Overall dimensions, mm 520 × 370 × 250
Weight, kg 28

FSM Series Advantages

High Sensitivity
FSM spectrometers provide substantially higher sensitivity than conventional dispersive instruments, enabling detection of very low concentrations and small quantities of substances. This is particularly important in analytical and research applications.
Automated Operation
Data acquisition and result processing are fully automated. A built-in wavelength reference and automatic self-testing support reliable instrument operation and data processing. The spectrometer requires no additional setup and is ready for operation after installation.
Software
The standard Windows-based software supports spectrum acquisition, instrument testing, and spectral database operation. A comprehensive set of tools is provided for spectrum processing, analysis, and visualization.
Fast Spectrum Acquisition
Short spectrum acquisition times provide high measurement throughput. The instruments can be used for continuous product quality control and real-time monitoring of process parameters.
Modular Design
The modular instrument architecture allows the system to be adapted for specialized applications, including gas analysis, fuel and oil analysis, semiconductor silicon characterization, and other tasks.
Optional Equipment and Accessories
A wide range of optical accessories is available for FSM spectrometers, including demountable and sealed liquid cells, gas cells including long-path cells, specular and diffuse reflectance accessories, multi-bounce attenuated total reflectance (ATR) accessories, presses and dies for KBr pellet preparation, and infrared microscopes.

FSM Series Applications

FSM Fourier Transform Infrared (FTIR) spectrometers are versatile instruments for qualitative and quantitative analysis across a wide range of scientific and industrial applications. Their high sensitivity, fast measurements, and flexible configurations make them suitable for laboratory research, industrial quality control, and environmental monitoring.
Chemistry and Petrochemistry
Qualitative and quantitative analysis of raw materials, intermediates, and final synthesis products. Analysis of petroleum products, including ethers, alcohols, aromatic compounds, and octane number determination. Fractional composition and structural-group analysis.
Pharmaceuticals
Identification of substances against infrared reference standards and quality control of pharmaceutical raw materials and finished dosage forms.
Electronics
Quality control of semiconductor silicon and semiconductor structures, as well as analysis of process gases.
Environmental Monitoring
Detection of petroleum products in water and soil, analysis of ambient air and workplace air, and monitoring of industrial emissions.
Polymers
Analysis of copolymer composition and properties of synthetic rubbers. Determination of modifying additives, including plasticizers and antioxidants.
Gas Analysis
Analysis of multicomponent gas mixtures and monitoring of natural gas composition and gas-industry products.
Food and Fragrance Industries
Rapid analysis of raw materials and finished products, including determination of protein, fiber, fat, and moisture content.
Forensic Analysis
Identification of natural and synthetic materials in microsamples and trace quantities.