Defining the best crystalline form of an API is crucial in drug development since it has a significant impact on its bioavailability and formulation properties. CARBOGEN AMCIS has established a service supporting our customers with crystallization investigations including solubility tests, salt screening, and optimization of the crystallization process and the solid-liquid separation in the API isolation process. Polymorphism screening complements the service portfolio. We offer online monitoring of critical parameters such as particle size, turbidity, temperature, and pH value as well as analytical services dedicated to solid phase characterization including hot stage microscopy, differential scanning calorimetry and X-ray powder diffraction.