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Raw Material Verification of Cellulose Found within the pharmaceutical world, cellulose is an extremely common, naturally-derived raw material. It supplies the underlying foundation for a wide range of applications. Cellulose is employed as an excipient in sunscreens, drug formulations, gauze, creams, and cotton; it has multiple uses in pharmaceutical applications. Traditional handheld Raman using a 785 nm laser is restricted in its capability to identify and verify cellulose accurately, despite the prevalence of cellulose and its derivatives in pharmaceutical products. This is because the fluorescence produced is usually too overwhelming (Fig. 1, red spectrum). In order to enable handheld Raman to verify fluorescence of cellulose materials easily in a pharmaceutical setting, the NanoRam ....
Historical Stamp Inks Identification with a Portable Raman Stamps are cultural heritage objects which give an amount of historical information that is invaluable. There is an increase in the amount of counterfeit historical inks; this is because historical stamps can hold a high monetary value as collector’s items. It is crucial that fraudulent stamps are able to be identified and removed from the market. The following review utilizes portable Raman to identify the colorants which are utilized in stamps on a historical envelope from 1885. The i-Raman EX ® is a portable Raman device with a 1064 nm laser. In order to minimize the fluorescence of the ink that is overwhelming with a 785 nm laser, the i-Raman EX is employed in this study. ....