B. Braun Uro-Tainer Twin Solutio R 6% Citric Acid is a sterile two-chamber irrigation solution designed for the maintenance of indwelling urethral and suprapubic urinary catheters. Each twin system contains two 30ml chambers, allowing two sequential instillations without disconnecting the closed system. The 6% citric acid formulation is specifically designed to help dissolve persistent catheter encrustation and can help minimise trauma during removal of an encrusted catheter. It is intended for short-term catheter maintenance use as directed by an appropriate healthcare professional.