During the process manufacturing of biologic products, chemicals are often added to improve product expression and yield, and these substances are removed at the purification stage after their purpose has been achieved. However, there will still be some residual agents that may remain in the API and formulation products. To ensure the quality and safety of their products, pharmaceutical companies need to use highly sensitive analytical methods to detect and quantify these impurities to ensure that they are present in the product at the lowest possible level. https://qbd.creative-diagn...