AstraGuard™
- The AstraGuard Bacterial/Viral Filter provides virtually perfect infection protection for expiratory and inspiratory spirometry testing
- This 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