# AstraGuard Bacterial / Viral Filter

## Product Features
*   Provides virtually perfect infection protection for expiratory and inspiratory spirometry testing
*   Easy-to-use disposable mouthpiece incorporates a highly efficient woven filter that virtually eliminates cross-contamination from patient to patient and from patient to health care professional
*   Low resistance to air flow
*   99.9% Bacterial and viral efficiency
*   Small, non-threatening size