The Agilent J&W Cyclo Sil-B GC Columns perform chiral separations without chiral specific derivations. Agilent makes more capillary columns than anyone else in the world and our commitment to product reliability and repeatability has raised the level of quality that chromatographers demand. We continue to tighten our performance criteria such as separation efficiency, retention characteristics, peak height ratios, and bleed rates. Note: Because CycloSil-B GC columns are not bonded or cross-linked, Agilent does not recommend solvent rinsing.