AstraGuard™ Bacterial / Viral Filter, 1 Box of 100 Bed Wetting Alarms The water-resistant material is safe

The water-resistant material is safe for use when washing up

accurate closure with a series of audible "clicks"

blue color quickly develops for easy-to-interpret results

The Adapt Ceraring™ barrier rings are latex-free and are beige

Gives excellent immobilization and support

AstraGuard™ Bacterial / Viral Filter, 1 Box of 100 Bed Wetting Alarms The water-resistant material is safeThe 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