HALO is a containment CSTD, as defined by NIOSH, containing no vents, valves, or filters. It provides airtight and leak-proof protection for clinicians compounding and administering hazardous drugs. HALO aims to maximize safety, allowing the components to be connected and disconnected up to 14 times without fluid or vapor exposure. Containing only six parts, it offers ease of use with a short learning curve and eliminates the need to stock proprietary parts.

The CSTD is ergonomically designed, having been created with the goal of reducing the repetitive motion injuries that can be associated with compounding and administering chemotherapy drugs. Clinicians can compound and administer HDs with less force and less twisting required, and simple push on/pull apart movements eliminate complex motions. The system is compatible with all commercially available hazardous drugs and associated solvents, bags, lines, syringes, and pumps.