Convenient and fast small scale Clean-Up of proteins and other large biomolecules (>5NANANA Mr) with the possibility to run multiple samples in parallel. Range of applications such as desalting, buffer exchange, and removal of lowmolecular weight compounds. High desalting capacity. Reproducible, high throughput, parallel Clean-Up of protein samples. Sample preparation in the range of 1NANA to 18NA μl without sample dilution. PD SpinTrap G25 is a singleuse microspin column that is designed for desalting and buffer exchange of biological sample using a standard microcentrifuge. The column is prepacked with ~6NANA μl Sephadex G25 Medium, and the column material is biocompatible polypropylene. Instructions supplied with the columns