The SDI Diagnostics PulmoGuard N™ PFT Filters are high-efficiency, single-use barrier components engineered to capture aerosol contaminants during pulmonary function testing (PFT). Specifically optimized by SDI Diagnostics for infection control, the PulmoGuard N™ series features a custom structural profile designed to fit ndd Medical Technologies spirometers natively without requiring a separate plastic adapter ring.
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