Near-infrared spectroscopy is analogous to mid-infrared spectroscopy (FTIR) by identifying chemicals based on the interaction of molecules with electromagnetic radiation in the near-infrared region (4000-10000 cm-1). NIR identifies chemicals based on the absorption of specific wavelengths of near-infrared light by a molecule, resulting in a spectrum that is characteristic for that molecule. NIR differs from mid-infrared spectroscopy in that the molecular absorbances are of higher-energy light, making the vibrations of the molecules of higher orders (i.e., combination and overtones) than that of mid-infrared. These instruments make analyses of foods, pharmaceutical, and consumer products fast and able to be performed by technicians with minimal training. The resulting spectra can be searched against reference spectral databases for pure materials, but mixture analysis requires a chemometric approach configured by an expert spectroscopist.

Bench top systems are most often used for analyzing condensed phase materials. In the last two decades, portable and handheld instruments have come into vogue, incorporating cloud-based reference libraries and enabling devices the size of a USB drive.

Manufacturer
Agilent Technologies (1)
B&W Tek (1)
Bay Spec (2)
Horiba Scientific (1)
Ocean Optics (1)
Physical Sciences, Inc. (4)
Research International, Inc. (1)
Thermo Fisher Scientific, Inc. (1)
Transportability
Pocket Size (1)
Handheld (5)
Person-Portable (2)
Benchtop/Fixed (4)
Availability
Commercially Available (12)
Unit Cost
< $100 (1)
$20,000 - $50,000 (2)
N/A (9)
Sample Introduction
Solid (7)
Vapor/Gas (5)
Sensitivity / Detection Limit
ppm (3)
Ci (1)
Other (1)
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Cary 630 FTIR

Cary 630 FTIR

Agilent Technologies

The Agilent Cary 630 FTIR spectrometer has permanently aligned optics to decrease uptime, has snap a...

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DeltaFlex

DeltaFlex

Horiba Scientific

The DeltaFlex is our fully configurable, most flexible and powerful lifetime system that offers unma...

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GasScan

GasScan

Physical Sciences, Inc.

The GasScan is based on near-IR tunable diode laser absorption spectroscopy (TDLAS). It has anstant ...

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i-Spec® Series

i-Spec® Series

B&W Tek

The i-Spec® series is a group of portable broadband fiber-optic coupled spectrometer systems for fie...

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microPHAZIR

microPHAZIR

Thermo Fisher Scientific, Inc.

The microPHAZIR ™ RX analyzer provides pharmaceutical manufacturers with a portable tool to analyze ...

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MWGS-1

MWGS-1

Physical Sciences, Inc.

Physical Sciences Inc. (PSI) has developed this for the laser-based sensing of gases. This instrumen...

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NIRQest

NIRQest

Ocean Optics

The NIRQuest Spectrometer's diffractive grating-based optical bench and 16-bit USB A/D converter are...

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Oracle

Oracle

Research International, Inc.

The Oracle™ is a noncontacting gas identifier with ppm sensitivity that requires no consumables, and...

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RMLD Portable Standoff Hazardous Gas Detector

RMLD Portable Standoff Hazardous Gas Detector

Physical Sciences, Inc.

The RMLD Gas Detector is based on near-IR tunable diode laser absorption spectroscopy (TDLAS). It se...

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SuperGamut™ Series

SuperGamut™ Series

Bay Spec

BaySpec’s SuperGamut™ series near-infrared - shortwave-infrared (NIR-SWIR), ultra-violet—near-infra...

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TDLAS gas analyzers

TDLAS gas analyzers

Physical Sciences, Inc.

Physical Sciences Inc. produces research trace gas sensors, based on tunable, room temperature diod...

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Wideband Light Sources

Wideband Light Sources

Bay Spec

BaySpec’s MiniLite™ series of wideband or broadband light sources are designed to enhance analytical...

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