SDI Diagnostics AstraGuard Filter, 29-7990-200

The SDI Diagnostics AstraGuard Bacterial/Viral Filters are high-efficiency, single-patient disposable testing mouthpieces designed to maximize infection control during pulmonary diagnostics. Engineered by SDI Diagnostics specifically for their Astra series spirometers, this integrated component protects patients and healthcare workers without requiring separate plastic adapters or extensions.