The OnGuard 2 closed system transfer device (CSTD) from B. Braun helps to protect healthcare providers against the harmful, and often invisible, risks of hazardous drug exposure. Tested with actual chemotherapy drug solvents, OnGuard can enhance safety when working with real hazardous drugs, both during compounding and delivery. With few proprietary pieces and parts, OnGuard 2 CSTD is designed to be simple to use to protect healthcare providers from unnecessary exposure to the hazardous drugs they work with every day.