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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
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