G418 Disulfate ReadyMade™ Solution (50 mg/ml in water) is an aqueous solution of G418 Disulfate. G418 Disulfate (syn: Geneticin), an aminoglycoside antibiotic originally isolated from Micromonospora rhodorangea. The product is routinely used for gene selection in cell culture. The aqueous format is safer and allows for streamlined workflows.