Vitalograph BVF Bacterial Viral Filter 1x50

Vitalograph BVF (Bacterial Viral Filters) are a bacterial and viral filter, even at sub micron size to help protect your test subject and your equipment. The BVF has a nanofibre medium creating electrostatic filtration having 99.99% cross-contamination efficiency. The BVF has a low expiratory flow impedance as well as a unique, comfortable 25mm mouthpiece (other sizes available). The Vitalograph BVF is tested and efficient at high flow rates and is fully disposable for complete hygiene.