X-ray diffraction of an over-the-counter pain medication

Figure 1 shows a diffraction pattern of Painaway, an over-the-counter headache product containing caffeine, aspirin (acetylsalicyclic acid), and acetaminophen. This combination of compounds with caffeine makes the product much more effective. Using the MiniFlex benchtop XRD system, the individual components can easily be determined. The peak positions for caffeine are identified by the purple lines, aspirin positions are marked by the blue lines and the acetaminophen positions are marked by the red lines.


This medicine can either be measured by the MiniFlex as a ground powder or whole tablet (see Figure 2).


Figure 2: Caffeine and pain medicine ready for measurement.
Ground powder (left) and whole tablet (right)

The fifth generation MiniFlex is a general purpose X-ray diffractometer that can perform qualitative and quantitative analysis of polycrystalline materials. The MiniFlex is available in two variations. Operating at 600 watts (X-ray tube), the MiniFlex 600 is twice as powerful as other benchtop models, enabling faster analysis and improved overall throughput. Running at 300 watts (X-ray tube), the new MiniFlex 300 does not require an external heat exchanger. Each model is engineered to maximize flexibility in a benchtop package. Read more...

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