Laboratory Raman Fiber Spectrometer: i-Raman EX

The i-Raman® EX spectrometer is part of B&W Tek’s award-winning range of i-Raman laboratory Raman systems and features a 1064-nm version of the company’s patented CleanLaze® excitation laser.

The laboratory Raman spectrometer uses a high-sensitivity InGaAs array detector with a high dynamic range and deep TE cooling and also features a high-throughput spectrograph design, thus delivering an excellent signal-to-noise ratio without causing autofluorescence. Thanks to these features, users can quantify an array of natural products, colored samples and biological samples, like cell cultures.

The i-Raman EX spectrometer offers a spectral coverage range between 100 and 2500 cm−1, enabling users to quantify the whole fingerprint area. The spectrometer has a lightweight design, a small footprint and consumes only minimal power, offering research-grade Raman capabilities anywhere.

The i-Raman EX spectrometer is supplied with an XYZ-positioning-stage probe holder and a fiber-optic probe. It can be utilized with many different sampling accessories to enable the measurements of different kinds of samples. The spectrometer can also be used with B&W Tek’s proprietary BWIQ® multivariate analysis software or with BWID® identification software.

With the i-Raman EX spectrometer, users can easily achieve a high-precision quantitative and qualitative Raman solution without fluorescence.


  • Bioscience and biomedical diagnostics
  • Forensic analysis, such as narcotics, paints and fibers
  • Pharmaceutical material analysis
  • Chemical warfare agent detection
  • Polymer and chemical analysis
  • Petroleum analysis
  • Explosives detection
  • Food and agriculture
  • Environmental science

Portable Raman Fiber Spectrometer—i-Raman EX

Cyclohexane spectrum with 1-second integration time, showing the high throughput and excellent signal-to-noise ratio. Image Credit: B&W Tek

Comparison of the measured spectra of sesame oil with 785 nm and 1064 nm Raman system.

Comparison of the measured spectra of sesame oil with 785 nm and 1064 nm Raman system. Image Credit: B&W Tek


B&W Tek offers a complete package of sampling accessories for quantifying liquid and solid samples, providing users the ultimate utility right out of the box.


The advanced BWIQ® quantitative Raman analysis software package from B&W Tek has intelligent algorithms, an intuitive user interface, and efficient matrix calculation power, rendering it easy to use by both novice and expert users.


Image Credit: B&W Tek


Software packages from B&W Tek provide solutions to meet the needs of Raman applications. Simple data management, robust calculations and easy-to-follow, user-friendly workflows are now available at the tips of users’ fingers.

B&W Tek includes the  general spectroscopic software, called BWSpec® with each system for instrument control and data acquisition, such as real-time peak analysis and trending. The BWID® software is optional and has been optimized for quick detection and verification of materials with spectral libraries.

For Raman applications in controlled settings, BWID®-Pharma software supports FDA 21 CFR Part 11 Compliance requirements. The software portfolio from B&W Tek also includes a multivariate software package—BWIQ®—to enable a quantitative and qualitative analysis of spectral data.

The BWIQ® software includes chemometric techniques, like Principal Component Analysis (PCA), Partial Least Squares Regression (PLS) and Support Vector Machine (SVM) regression, extensive graphics for model interpretation and a complete suite of preprocessing tools.


Image Credit: B&W Tek

Specifications: BWS485II

Source: B&W Tek

Laser Exiting Probe At Laser Port
1064nm Excitation 330 mW, nominal 430 mW, nominal
Laser Power Control 0 to 100% (adjustable at 1% increments)
Range 100 cm-1 - 2500 cm-1
Resolution* < 10 cm-1 @1296 nm
Detector Type TE-Cooled InGaAs
Integration Time 200 µs to 5 minutes
CCD Cooling Temperature -15 °C ± 2
Computer Interface USB 2.0 / 1.1
Trigger Yes(Compatible with B&W Tek Probes)
Power Options
Battery Optional
Dimensions 6.7in x 13.4in x 11in (17cm x 34cm x 28cm)
Weight Main Unit ~7.6 lbs (~3.4 kg)
Operating Temperature 0 °C - 35 °C
Storage Temperature -10 °C - 60 °C
Humidity 10% - 85%, non-condensing


*Resolution measured using atomic emission lines. Raman resolution per ASTM E2529-06 (Standard guide for testing the resolution of a Raman spectrometer) is available on request.


  • Patented CleanLaze® technology for laser stabilization
  • High-throughput spectrograph for faster signal collection
  • 1064-nm excitation to reduce fluorescence
  • Fiber-optic coupling for easy sampling

Included Accessories

  • Probe holder
  • Laser safety goggles
  • Fiber-optic Raman probe

Portable Raman Fiber Spectrometer—i-Raman EX

Image Credit: B&W Tek

Optional Accessories

  • Microscope adaptor
  • Immersion Raman probe shaft
  • Cuvette holder
  • Enclosure for Raman sampling system
  • Raman flow cell
  • Video microscope
  • An array of long-working-distance lenses (up to 6 m) for stand-off measurement

Portable Raman Fiber Spectrometer—i-Raman EX

Image Credit: B&W Tek

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