Vitalograph Bacterial Viral Filters (BVFs) Provide >99.999% Cross-Infection Protection

Vitalograph BVFs have been shown to have >99.999% effectiveness for prevention of microbial transfer to equipment, as well as reducing potential transfer from equipment to user to a level below levels of detection.

Using a Vitalograph BVF reduces the contamination risk to spirometers, pulmonary function testing equipment and respiratory monitors, and the potential infection risk to humans. We have no hesitation in recommending that you use a BVF every time for maximum possible protection.

For COVID-19, focus is correctly placed on community transmission, but infection may also occur in clinical settings like hospitals or health practices. A recent  ERS Statement on conducting lung function testing during the COVID-19 pandemic and beyond recommends using a high specification disposable in-line bacterial and viral filter (with minimum proven efficiency for high expiratory flow of 600 to 700 L/min). Vitalograph’s BVFs meet the standards outlined by the ERS.

Professor Colum Dunne, University of Limerick & colleagues tested our BVFs (not specifically COVID-19 related testing) to assess effectiveness in preventing bacterial or viral transfer to and from respiratory equipment. Results showed >99.999% effectiveness for prevention of microbial transfer to equipment. BVFs also reduced potential transfer from equipment to user to a level below levels of detection. This suggests BVFs should be used where possible when testing using respiratory equipment.

Vitalograph recommends cleaning spirometer flowheads between each patient, using 70% isopropyl alcohol. Professor Dunne believes that these approaches potentially reduce the risk of spreading COVID-19, and other bacteria or viruses, between patients in clinical settings. Read the report here.

When a new BVF is used for every patient, the interior of the device is protected meaning that only exterior surfaces should require cleaning. In light of the COVID-19 pandemic, and if your local risk assessment demands a higher level of decontamination, or you have reason to suspect that the interior of your device may have become contaminated, please follow our Flowhead Cleaning Instructions.

BVFs are not intended for use on ventilators & face masks.


Cross Contamination
Report for Bacterial Viral Filters (BVFs)

Certificate of Cross-Infection Efficiency for BVFs