The SEALED Waters WAT085711 RESOLVE Column C18 150mm 3.9mm is a high-quality chromatography column made by Waters in the United States. This column is designed for separating and identifying components in a sample with a 2-8pH range, making it ideal for a variety of applications in research, clinical, and industrial settings. With a 5µm, 90Å particle size and a 150mm length, this column provides efficient and reliable separation performance for a wide range of samples.