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Identification of Forensic Fabrics Using a Portable Raman Spectrometer

B&W Tek, Inc.
17 Nov 2014

In recent years, Raman spectroscopy has been studied extensively for forensic fiber analysis because of the high selectivity of Raman signatures, non-destructive nature of the test, and the ability to conduct the analysis without any sample preparation. The Raman test can be performed directly on fabrics or fibers mounted on glass slide with very little interference from the mounting resin or the glass.

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iRaman EX ‒ 1064nm Fiber Optic Raman System

B&W Tek, Inc.

The i-Raman®EX is an extension of our award winning i-Raman portable Raman spectrometer featuring a 1064nm version of our patented CleanLaze® excitation laser Using a high sensitivity InGaAs array detector with deep TE cooling and high dynamic range, this portable Raman spectrometer delivers a high signal to noise ratio without inducing autofluorescence, making it possible to measure a wide range of biological samples.The i-Raman EX Raman spectrometer provides spectral resolution as fine as 9.5cm-1 and a spectral coverage range from 175-2500cm-1, enabling you to measure the entire fingerprint region. The system’s small footprint, lightweight design, and low power consumption provide research grade Raman capabilities anywhere.The i-Raman EX Raman spectrometer comes standard with a fiber optic probe, probe holder with XYZ positioning stage, cuvette adaptor for measuring liquid samples, and our proprietary BWIQ multivariant analysis software. With the i-Raman EX, a high precision qualitative and quantitative Raman solution is at your fingertips.iRaman EX ‒ 1064nm Fiber Optic Raman System Features: Our comprehensive package of sampling accessories for measuring solid and liquid samples provide you the utmost utility right out of the box. Our state of the art BWIQ quantitative Raman analysis software package provides an intuitive user interface, intelligent algorithms, and efficient matrix calculation power, making it easy to use by both expert and novice users. Patented CleanLaze Technology for Laser Stabilization 1064nm Excitation for Removal of Fluorescence Integration Time 0.2mn to >20 minutes Adjustable Laser Power, Up to 480mW Deep Cooled InGaAs Array Detector Spectral Coverage of 175-2500cm-1 Resolution as Fine as 9.5cm-1

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Raman SpectroscopyRaman spectroscopy is used to discern the vibrational and rotational states of molecules and hence the chemical composition of a sample by measuring the inelastic scattering of monochromatic light. Explore a range of Raman spectrometers, including handheld/portable Raman spectrometers for QC/QA labs and in situ spectrometers for processes. Conduct Raman imaging for microanalysis of mixed samples using a Raman microscope. Raman spectrographs are also available. Find the best Raman spectroscopy products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Evidence Collection and AnalysisEvidence Collection and Analysis is the retrieval and subsequent investigation into criminal evidence obtained from a crime scene. Forensic genetic instruments, kits and reagents enable the analysis of evidence collected  at the crime scene. Reagents and kits for presumptive analysis for body fluids such as blood, saliva and semen in addition to drugs and narcotics test kits are used for CSI. Fingerprinting equipment, forensic light sources, casting kits and equipment for collecting recoverable materials can be found in the directory.Light MicroscopyLight microscopes or optical microscopes are used to visualize microscale objects under magnification, including cells, clinical specimens and materials. Lab equipment for light microscopy includes confocal microscopes, fluorescence microscopes, zoom and stereo microscopes. Microscope slides and imaging reagents are available for visualizing samples, as well as various microscope stages and incubators for large or temperature-sensitive samples. Find the best light microscopes in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.FibersForensic InvestigationForensic investigation is a diverse collection of scientific techniques and methods for the identification and characterization of chemicals relating to crime scene investigations.

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