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In this article portable Raman spectroscopy as an effective tool for at-line characterization of carbon black is presented. Raman spectroscopic analysis can be an effective test to characterize carbon black material, including the structural order.

Raman spectroscopy is an advantageous analytical tool that allows for the measurement of molecular structure and identifying chemical composition of materials based on the rotational and vibrational modes of a molecule. With advanced technology and an optimized optical design, the B&W Tek BAC102 series E-grade probe can access lower frequency modes down to 65 cm-1, providing key information for applications in protein characterization, polymorph detection, and identification, along with material phase and structure determination.

Correct identification of mineral phases in rock thin sections is essential to petrographic and petrologic analysis of rocks. Portable Raman coupled to an optical microscope gives chemical information along with the optical images to give a higher certainty of identification than traditionally used optical micropcopy alone.

This technical note is to demonstrate the NanoRam material identification through dark brown plastic bags. NanoRam is shown to work for material identification inside dark brown polyvinyl bag.

Handheld Raman is used for raw material testing of different sample types and forms. The use of optimized sampling accessories enhances the utility of handheld Raman without compromising data quality or complicating testing.

Cellulose is a common naturally-derived raw excipient found in the majority of pharmaceutical products. Raw material testing is required to ensure that consumers are receiving quality cellulose and its derivatives. The NanoRam®-1064 is an asset for pharmaceutical identity testing, minimizing fluorescence generated by typical handheld Raman systems with 785 nm lasers. As such, the NanoRam®-1064 is used here to identify cellulose derivatives that would normally fluoresce with a 785 nm laser.

The TacticID®-GP Plus has multiple measurement modes to support safety and security users. A-Mode allows the user to create library Raman or SERS spectra customizable for spectral search range and hit quality index (HQI) threshold. A-mode is of beneficial use to forensics laboratories that would like to utilize expansion of SERS detection of designer drugs specific to their geographical regions or for food safety in perspective markets. In this example, A-Mode is used to create a SERS library of melamine to easily detect the presence of melamine in infant formula using a single indicator peak.

Botanicals are derived from plant materials and used for their medicinal and therapeutic properties in the nutraceuticals market. They are not as heavily regulated by the U.S. Food and Drug Administration (FDA) like the pharmaceuticals drug market, but they are required to follow Good Manufacturing Practice (GMP Requirements).The NanoRam®-1064 is an asset for pharmaceutical identity testing, minimizing fluorescence generated by typical handheld Raman systems with 785 nm lasers. As such, the NanoRam®-1064 is used here to identify botanicals that would normally fluoresce with a 785 nm laser.

Stamps are cultural heritage objects that provide an invaluable amount of historical information. There is an increase of counterfeit historical inks and it is imperative that fraudulent stamps can be identified and removed from the market. The portable Raman i-Raman EX® with a 1064 nm laser is used because it minimizes the fluorescence of the ink. The i-Raman EX® also has the functionality of low laser power reduction down to 1% to prevent sample burning and the Raman video microscope system analyzes the smallest of details, which is imperative for cultural heritage analysis of an 1885 historical envelope.

Research laboratories must expand their capabilities to routinely analyze candidate microplastics from environmental samples to determine their origin and help predict biological impacts. Spectroscopic techniques are well suited to polymer identification. Laboratory Raman spectroscopy is an alternative to confocal Raman microscopes and Fourier transform infrared (FTIR) microscopes for quick identification of polymer materials. Raman microscopy was used to identify very small microplastic particles in this Application Note.