X-ray diffraction runs through every stage of drug quality control, such as the study of raw materials and preparations.

By comparing the powder diffraction patterns of tested samples and known substances, X-ray diffraction completes the characterization and polycrystalline type distinction of drugs, and is the main means to monitor the crystal transformation of the main drug ingredients and excipients in the process of research, production and storage of pharmaceutical preparations. X-ray diffraction is specific and directly reflects the excipient information without extracting the active ingredient from the tablet, reducing the processing burden in the identification test of drug mixture ingredients.

1.Polycrystalline type identification of API

2. Identification of raw materials in solid preparations