Fully Automatic Fraction Collection System – The CS 1521 Prep HPLC System incorporates an advanced automated fraction collection system designed to maximize efficiency, accuracy, and ease of operation in preparative chromatography. It enables fully automatic injection and fraction collection, minimizing manual handling and ensuring consistent recovery of purified compounds. The intelligent detection algorithm automatically identifies peak thresholds, slopes, and area conditions, ensuring precise fraction collection based on real-time chromatographic data. The system also supports multiple sample holder configurations (including 30 mm and 16 mm options), providing flexibility for various sample volumes and collection needs. By integrating automation with smart detection, the CS 1521 Prep delivers fast, accurate, and reproducible purification—making it ideal for large-scale compound isolation, pharmaceutical purification, and biochemical research applications.